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A166605 Numbers k such that Sum_{i=1..k} i^5 divides Product_{i=1..k} i^5. 6

%I #7 May 18 2016 23:13:58

%S 1,13,64,95,111,118,123,133,134,140,151,177,199,217,229,242,255,264,

%T 274,281,302,305,325,333,338,354,359,365,376,394,411,414,431,433,440,

%U 472,475,477,489,514,525,528,529,537,547,569,574,583,584,585,589,594,615

%N Numbers k such that Sum_{i=1..k} i^5 divides Product_{i=1..k} i^5.

%H G. C. Greubel, <a href="/A166605/b166605.txt">Table of n, a(n) for n = 1..10000</a>

%e a(2) = A125314(5) = 13.

%t k = s = 1; p = 1; lst = {}; While[k < 100000, If[Mod[p, s] == 0, AppendTo[lst, k]]; k++; s = s + k^5; p = p*k^5]; lst (* _G. C. Greubel_, May 18 2016 *)

%Y Cf. A125314, A166602, A060462, A166604, A166606, A166607, A166608, A166609, A166610.

%K nonn

%O 1,2

%A _Alexander Adamchuk_, Oct 18 2009

%E More terms from _Max Alekseyev_, Sep 29 2010

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Last modified March 29 09:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)