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A051420 Numbers k such that A000081(k) is prime. 4

%I #29 Oct 28 2021 02:28:21

%S 3,10,15,343,387,1087,2981,96761

%N Numbers k such that A000081(k) is prime.

%C A000081(2981) = O(10^1400) is only a probably prime. No more terms < 6000.

%C No more terms < 40000. - _Vaclav Kotesovec_, Jul 07 2020

%C A000081(96761) is a probable prime. No other terms < 100000. - _Mathieu Gouttenoire_, Oct 08 2021

%Y Cf. A000081, A119642, A185667, A336039.

%K nonn,more

%O 1,1

%A _David Broadhurst_

%E a(8) from _Mathieu Gouttenoire_, Oct 08 2021

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)