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Revision History for A152888

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A152888

Partial sums of length of terms in A081368 where A081368(1) is set to 0.
(history; published version)

#15 by Joerg Arndt at Wed Aug 14 02:22:55 EDT 2013

STATUS

reviewed

approved

#14 by Joerg Arndt at Tue Aug 13 12:49:37 EDT 2013

STATUS

proposed

reviewed

#13 by Joerg Arndt at Tue Aug 13 06:38:01 EDT 2013

STATUS

editing

proposed

#12 by Joerg Arndt at Tue Aug 13 06:37:16 EDT 2013

NAME

Partial sums of length of terms in A081368 where A081368(1) is set to 10.

FORMULA

E = Sum[A081368[n]/10^a(n),{n,1,Length}]; Solve for a(n).

PROG

(PARI) v=[71, 828, 1828, 45904, 5235360, 2874713, 52662497, 757247093, 6999595749, 66967627724, 76630353547, 5945713821785, 25166427427466, 391932003059921, 8174135966290435, 72900334295260595, 630738132328627943];

concat([0], vector(#v, n, sum(j=1, n, #digits(v[j])))) \\ Joerg Arndt, Aug 13 2013

KEYWORD

nonn,base,less,changed

#11 by Joerg Arndt at Tue Aug 13 06:32:59 EDT 2013

NAME

Partial sums of length of terms in A081368 where A081368(01) is set to 1.

OFFSET

0,1,2

STATUS

proposed

editing

Discussion

Tue Aug 13

06:33

Joerg Arndt: That should be it.  I'll try to add a program.

#10 by Michel Marcus at Tue Aug 13 05:51:06 EDT 2013

STATUS

editing

proposed

#9 by Michel Marcus at Tue Aug 13 05:50:07 EDT 2013

NAME

The sequence Partial sums of length of powers necessary to reconstruct Exp[0] from terms in A081368 where A081368(0) is set to 1.

COMMENTS

Previous name was: The sequence of powers necessary to reconstruct Exp([0) ] from Thanh Diep's sequence A081368: E= Sum[A081368[n]/10^a(n),{n,1,Length}].

EXTENSIONS

Edited by Joerg Arndt and Michel Marcus, Aug 13 2013

STATUS

proposed

editing

Discussion

Tue Aug 13

05:51

Michel Marcus: Partial sums OK.
Like this then ?

#8 by Joerg Arndt at Tue Aug 13 05:00:24 EDT 2013

STATUS

editing

proposed

#7 by Joerg Arndt at Tue Aug 13 04:51:12 EDT 2013

MATHEMATICA

Clear[a, n];

Discussion

Tue Aug 13

04:59

Joerg Arndt: Doesn't matter...
Isn't this one just: "Partial sums of length of terms in A081368." ?

05:00

Joerg Arndt: ...where A081368(0) is set to 1.

#6 by Joerg Arndt at Tue Aug 13 04:50:02 EDT 2013

NAME

The sequence of powers necessary to reconstruct Exp[0] from Thanh Diep's sequence A081368.

STATUS

proposed

editing