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A302089
Primes of form 5*k^k + 4.
2
139, 15629, 1937102449
OFFSET
1,1
COMMENTS
The next term is too large to include.
FORMULA
a(n) = 5*A302088(n)^A302088(n) + 4.
PROG
(PARI) lista(nn) = forstep(n=1, nn, 2, if(ispseudoprime(p=5*n^n+4), print1(p, ", "))); \\ Altug Alkan, Apr 01 2018
CROSSREFS
Primes of form b*k^k + b - 1: A216148 (b=2), A301811 (b=3), A301808 (b=4), this sequence (b=5), A302091 (b=6).
Cf. A302088.
Sequence in context: A158527 A201174 A281249 * A188452 A183491 A215571
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Apr 01 2018
STATUS
approved