A288676 Numbers k such that A108394(k) is not a prime.

5, 22, 25, 26, 31, 36, 39

Offset

1,1

Comments

A288641(a(n)) > A108394(a(n)).

a(8) > 61.

Links

Table of n, a(n) for n=1..7.

Eric Weisstein's World of Mathematics, Goebel's Sequence

Example

a(1) = 5. So A288641(5) > A108394(5), that is 251 > 214.

Crossrefs

Cf. A108394, A288641.

Sequence in context: A229801 A045015 A283758 * A085101 A350120 A290510

Adjacent sequences: A288673 A288674 A288675 * A288677 A288678 A288679

Keyword

nonn,more

Author

Seiichi Manyama, Jun 13 2017

Status

approved