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A242463 a(n) = A152466(n) + 1. 1

%I #27 Jan 01 2023 17:09:58

%S 253,2773,130285,651421,219528541,257067920341,4370154645781,

%T 292800361267261,11023640801351071741,13475008472558425746927448861,

%U 5107028211099643358085503117941,1313771981231475489737485570488833367541

%N a(n) = A152466(n) + 1.

%C Conjecture: this sequence has no prime terms.

%C A152466(n+1) = A152466(n) * (smallest prime factor of a(n)).

%C This conjecture has now been disproved: a(39) is a prime number. - _Andrea Concaro_, Dec 31 2022

%H Andrea Concaro, <a href="/A242463/b242463.txt">Table of n, a(n) for n = 1..39</a>

%e A152466(1) = 252, a(1) = 252 + 1 = 253.

%Y Cf. A152466.

%K nonn

%O 1,1

%A _J. Lowell_, May 15 2014

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Last modified March 3 17:23 EST 2024. Contains 370512 sequences. (Running on oeis4.)