The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A161809

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A161809

G.f.: A(x) = exp( Sum_{n>=1} 3*A038500(n) * x^n/n ), where A038500 is the highest power of 3 dividing n.
(history; published version)

#22 by OEIS Server at Fri Nov 01 04:40:15 EDT 2024

LINKS

Vaclav Kotesovec, <a href="/A161809/b161809_1.txt">Table of n, a(n) for n = 0..10000</a>

#21 by Vaclav Kotesovec at Fri Nov 01 04:40:15 EDT 2024

STATUS

editing

approved

Discussion

Fri Nov 01

04:40

OEIS Server: Installed first b-file as b161809.txt.

#20 by Vaclav Kotesovec at Fri Nov 01 04:40:05 EDT 2024

LINKS

Vaclav Kotesovec, <a href="/A161809/b161809_1.txt">Table of n, a(n) for n = 0..10000</a>

#19 by Vaclav Kotesovec at Fri Nov 01 04:36:40 EDT 2024

MATHEMATICA

nmax = 50; CoefficientList[Series[Exp[Sum[3^(IntegerExponent[k, 3] + 1)*x^k/k, {k, 1, nmax}]], {x, 0, nmax}], x] (* Vaclav Kotesovec, Nov 01 2024 *)

STATUS

approved

editing

#18 by Joerg Arndt at Sat Jun 25 08:24:53 EDT 2022

STATUS

reviewed

approved

#17 by Vaclav Kotesovec at Sat Jun 25 07:49:57 EDT 2022

STATUS

proposed

reviewed

#16 by Michel Marcus at Sat Jun 25 05:33:04 EDT 2022

STATUS

editing

proposed

#15 by Michel Marcus at Sat Jun 25 05:32:54 EDT 2022

CROSSREFS

Cf. A038500, A182000, A182185, A000123.

STATUS

proposed

editing

#14 by Sean A. Irvine at Sat Jun 25 05:08:33 EDT 2022

STATUS

editing

proposed

#13 by Sean A. Irvine at Sat Jun 25 05:08:29 EDT 2022

CROSSREFS

Partial sums of A309677.

STATUS

approved

editing