OFFSET
1,1
COMMENTS
This sequence is presumably infinite. See 1st comment of A002496.
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
FORMULA
A002496(a(n)) mod 10 = 1.
MAPLE
P:=[seq(k mod 10, k=select(isprime, [2, seq(4*i^2+1, i=1..10000)]))]:
seq(`if`(P[i] mod 10 = 1, i, NULL), i=1..nops(P));
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Martin Renner, Apr 27 2019
STATUS
approved