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A189123 Positive integers n such that A005245(n-i) + A005245(i) < A005245(n-1) + 1 for some i, 1 < i < n. 3

%I #8 Mar 30 2012 17:27:06

%S 21080618,63241604,67139098,116385658,117448688,126483083,152523860,

%T 189724562,212400458,229762259,318689258,348330652,353942783,

%U 366873514,373603732,379448999,385159320,404764540,409108300,460759642,465722100,477258719,498197068,511069678,516743639,519835084,538858312,545438698,545790940,546853138,574842670,575550972,581106238,590785918

%N Positive integers n such that A005245(n-i) + A005245(i) < A005245(n-1) + 1 for some i, 1 < i < n.

%C Counterexamples to the first conjecture of David Wilson on A005245.

%C a(1) was found by Igor aka CD_Eater from Moscow in January, 2008

%C Prime terms are listed in A189125.

%H <a href="http://dxdy.ru/topic11665.html">Discussion at dxdy.ru</a> (in Russian)

%H Janis Iraids, <a href="http://www.ltn.lv/~podnieks/stud/expmath/Janis20100622.txt">Values of a(n) below 1.5*10^9</a>

%H Martin N. Fuller, <a href="/A005245/a005245.c.txt">C program for A005245</a>

%Y Cf. A005245, A189124, A189125

%K nonn

%O 1,1

%A _Max Alekseyev_, Apr 17 2011

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)