A130134 Even terms in A015922.

2, 4, 8, 248, 17608, 90148, 106978, 253828, 364808, 1642798, 1926088, 6176264, 21879938, 30484408, 34634428, 96593698, 134396408, 223622468, 283585928, 327327388, 457961188, 809965148, 1709420344, 1815124028, 2164392968, 2360006456, 2431619908, 2500777828, 2922255548, 3888155428, 5672481928

Offset

1,1

Comments

Also, the even terms of A033554.

Links

Max Alekseyev, Table of n, a(n) for n = 1..314 (all terms below 10^15)

Prog

(PARI) isok(n) = !(n % 2) && (Mod(2^n, n) == Mod(8, n)); \\ Michel Marcus, Oct 13 2013

Crossrefs

Cf. A015922, A130133.

Sequence in context: A012648 A130133 A033555 * A082613 A013553 A302864

Adjacent sequences: A130131 A130132 A130133 * A130135 A130136 A130137

Keyword

nonn

Author

Zak Seidov, May 12 2007

Extensions

a(8)-a(9) from Michel Marcus, Oct 13 2013

Terms a(10) onward from Max Alekseyev, Oct 11 2016

Status

approved