The On-Line Encyclopedia of Integer Sequences (OEIS)

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Revision History for A258800

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Showing entries 1-10 | older changes

A258800

The number of zeroless decimal numbers whose digital sum is n.
(history; published version)

#17 by Alois P. Heinz at Wed Feb 19 19:18:29 EST 2020

STATUS

editing

approved

#16 by Alois P. Heinz at Wed Feb 19 19:18:14 EST 2020

CROSSREFS

Cf. A211072.

STATUS

approved

editing

#15 by Alois P. Heinz at Fri Dec 23 10:56:39 EST 2016

KEYWORD

nonn,base,changed

STATUS

editing

approved

#14 by Panagiotis Tsikogiannopoulos at Fri Dec 23 07:41:59 EST 2016

EXTENSIONS

I wrote a program that confirmed the sequence 1,2,4,8,16,32,64,128,256 but I find 510 instead of 511 for the next number. I also have the list of the 510 numbers. Anyone who can confirm or deny this?

#13 by Panagiotis Tsikogiannopoulos at Fri Dec 23 07:32:10 EST 2016

EXTENSIONS

STATUS

approved

editing

#12 by N. J. A. Sloane at Mon Jun 22 00:06:33 EDT 2015

STATUS

proposed

approved

#11 by Michel Marcus at Sat Jun 20 02:01:59 EDT 2015

STATUS

editing

proposed

#10 by Michel Marcus at Sat Jun 20 02:01:47 EDT 2015

CROSSREFS

Cf. A125630, A125858, A125858, A125880, A125897, A125904, A125908, A125909, A125910, A125945, A125946, A125947, A125948, A126627, A126628, A126629, A126631, A126632, A126633, A126634, A126635, A126639, A126640, A126641, A126642, A126643, A126644, A126645, A126646, A126718.

A125946, A125947, A125948, A126627, A126628, A126629, A126631, A126632, A126633, A126634,

A126635, A126639, A126640, A126641, A126642, A126643, A126644, A126645, A126646, A126718.

STATUS

proposed

editing

#9 by Robert G. Wilson v at Sat Jun 13 15:55:28 EDT 2015

STATUS

editing

proposed

Discussion

Sat Jun 13

16:23

Tom Edgar: I'm not sure about "decimal numbers"....

18:05

Jon E. Schoenfield: @Tom -- Do you think it might be better to call them "base-10 numbers"?

I'm wondering about rewording the Comments to avoid 2nd-person pronouns. E.g.,

     If decimal numbers containing any number of zeros were included, then a(n) would be infinity for every n>0. If, on the other hand, the number of zeros were limited to some number, then a(n) would be finite for every n.

...?  Or maybe something like

     For any n>0, there exist an infinite number of numbers whose digital sum is n, if the numbers can contain an unlimited number of zero digits. If a finite limit on the number of zero digits is applied, then the number of numbers whose digital sum is n is finite for all n.

I don't know ... that last suggestion seems awfully wordy to me.  :-/

#8 by Robert G. Wilson v at Sat Jun 13 15:55:21 EDT 2015

CROSSREFS

Cf. A125630, A125858, A125858, A125880, A125897, A125904, A125908, A125909, A125910, A125945,

A125946, A125947, A125948, A126627, A126628, A126629, A126631, A126632, A126633, A126634,

A126635, A126639, A126640, A126641, A126642, A126643, A126644, A126645, A126646, A126718.

STATUS

proposed

editing