The On-Line Encyclopedia of Integer Sequences (OEIS)

The OEIS is supported by the many generous donors to the OEIS Foundation.

Revision History for A265849

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A265849

First differences of A006751.
(history; published version)

#26 by Alois P. Heinz at Thu Jul 07 20:56:41 EDT 2022

STATUS

proposed

approved

#25 by Jon E. Schoenfield at Thu Jul 07 20:48:15 EDT 2022

STATUS

editing

proposed

#24 by Jon E. Schoenfield at Thu Jul 07 20:48:14 EDT 2022

COMMENTS

Note that A005150 has really different first differences characteristic because of the its initial term that is 1.

STATUS

approved

editing

#23 by N. J. A. Sloane at Mon Jan 04 17:53:09 EST 2016

STATUS

proposed

approved

#22 by Michael De Vlieger at Sun Jan 03 09:37:07 EST 2016

STATUS

editing

proposed

Discussion

Sun Jan 03

10:36

Altug Alkan: Thank you very much Mr. Greubel for your valuable editing, best regards. You are right. Because of my computer problem now, I couldn't add b-file. Sorry for this situation.Best regards.

#21 by Michael De Vlieger at Sun Jan 03 09:37:02 EST 2016

MATHEMATICA

f[n_, d_: 1] := NestList[Flatten[Reverse /@ Map[Function[k, Through[{First, Length}@ k]], Split@ #]] &, {d}, n - 1]; Differences@ Array[FromDigits@ f[#, 2][[#]] &, {13}] (* Michael De Vlieger, Jan 03 2016, after Zerinvary Lajos at A006751 *)

STATUS

proposed

editing

#20 by G. C. Greubel at Sun Jan 03 00:53:09 EST 2016

STATUS

editing

proposed

#19 by G. C. Greubel at Sun Jan 03 00:51:31 EST 2016

COMMENTS

Are partial sums of look and say sequences interesting too?

STATUS

proposed

editing

Discussion

Sun Jan 03

00:53

G. C. Greubel: Removed the comment "Are partial sums of look and say sequences interesting too? " since it is a general indirect comment. Is it possible to add a b-file?

#18 by Altug Alkan at Fri Dec 25 05:20:38 EST 2015

STATUS

editing

proposed

#17 by Altug Alkan at Fri Dec 25 05:19:19 EST 2015

COMMENTS

Sequence is interesting because this sequence displays the certain characteristic features of look and say sequence A006751. Certain formulas can represent the relations between terms of this sequence. In formula section, there are the most simpliest of them. Note that these features cannot be observed for all look and say sequences. For example, A005150 has really different first differences characteristic because of the its initial term that is 1.

Note that A005150 has really different first differences characteristic because of the its initial term that is 1.

Are partial sums of look and say sequences interesting too?

Discussion

Fri Dec 25

05:20

Altug Alkan: I changed my comments, thanks.