

A301638


Primes of the form 5^k + 5*k + 1.


1




OFFSET

1,1


COMMENTS

The next term is too large to include.
The next term has 349 digits.  Harvey P. Dale, Dec 03 2018


LINKS

Table of n, a(n) for n=1..6.


FORMULA

a(n) = 5^A301635(n) + 5*A301635(n) + 1.


MATHEMATICA

Select[Table[5^n+5n+1, {n, 0, 550}], PrimeQ] (* Harvey P. Dale, Dec 03 2018 *)


CROSSREFS

Primes of the form b^k+b*k+1: A163115 (b=2), A180269 (b=3), this sequence (b=5).
Cf. A301635.
Sequence in context: A346144 A230229 A027736 * A309863 A110982 A079331
Adjacent sequences: A301635 A301636 A301637 * A301639 A301640 A301641


KEYWORD

nonn


AUTHOR

Seiichi Manyama, Mar 25 2018


STATUS

approved



