OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Range[700], !SquareFreeQ[GCD[2*# + 1, BernoulliB[4*# + 2]]] &] (* Amiram Eldar, Aug 31 2024 *)
PROG
(PARI) for(n=1, 3000, if(!issquarefree(gcd(2*n+1, numerator(bernfrac(4*n+2)))), print1(n", ")))
CROSSREFS
KEYWORD
nonn
AUTHOR
Ralf Stephan, Sep 01 2004
STATUS
approved