login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

Singular indices in A139074.
1

%I #7 Jan 07 2013 14:23:10

%S 9,13,22,23,72,73,74,82,83,84,85,88

%N Singular indices in A139074.

%C Definition: Singular indices in A139074 are numbers n such that it doesn't exist a prime p such that (n+p!)/n is prime or if this prime does exist then it is very big.

%Y Cf. A139074, A139206, A151900.

%K nonn

%O 1,1

%A _Artur Jasinski_, Apr 12 2008