The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A356238

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

A356238

a(n) = Sum_{k=1..n} (k * floor(n/k))^n.
(history; published version)

#18 by Vaclav Kotesovec at Tue Aug 02 10:37:59 EDT 2022

STATUS

reviewed

approved

#17 by Michel Marcus at Tue Aug 02 10:28:56 EDT 2022

STATUS

proposed

reviewed

#16 by Seiichi Manyama at Tue Aug 02 10:11:39 EDT 2022

STATUS

editing

proposed

#15 by Seiichi Manyama at Tue Aug 02 10:11:36 EDT 2022

LINKS

Seiichi Manyama, <a href="/A356238/b356238.txt">Table of n, a(n) for n = 1..386</a>

STATUS

approved

editing

#14 by Michael De Vlieger at Sat Jul 30 14:14:26 EDT 2022

STATUS

proposed

approved

#13 by Amiram Eldar at Sat Jul 30 09:45:38 EDT 2022

STATUS

editing

proposed

#12 by Amiram Eldar at Sat Jul 30 09:45:36 EDT 2022

MATHEMATICA

a[n_] := Sum[(k * Floor[n/k])^n, {k, 1, n}]; Array[a, 18] (* Amiram Eldar, Jul 30 2022 *)

STATUS

proposed

editing

#11 by Seiichi Manyama at Sat Jul 30 09:43:11 EDT 2022

STATUS

editing

proposed

#10 by Seiichi Manyama at Sat Jul 30 08:33:29 EDT 2022

CROSSREFS

Cf. A007778, A350109, A350125, A356239, A356240.

#9 by Seiichi Manyama at Sat Jul 30 08:31:46 EDT 2022

DATA

1, 8, 62, 849, 8541, 206345, 2581403, 76623522, 1617299079, 49463993875, 952905453423, 59000021366675, 1198427462876421, 54128102218676115, 2321105129608323165, 117387839988330848902, 3205342976298888473968, 268263812478494295219717