A141498 a(n) = A010696(n-1) * A086892(n).

2, 6, 2, 30, 2, 42, 2, 30, 2, 66, 46, 2730, 2, 6, 2, 510, 2, 798, 2, 1650, 2, 138, 94, 2730, 2, 6, 2, 870, 2, 14322, 2, 510, 46, 6, 142, 140100870, 2, 6, 2, 67650, 2, 12642, 862, 690, 2, 282, 2, 4501770, 2, 66, 2, 1590, 2, 798, 46, 870, 2, 354, 2, 283933650, 2, 6, 2, 510, 2

Offset: 1

Author

Paul Curtz, Aug 10 2008

Keywords

• nonn

Crossrefs

Cf. A010696, A086892.

Programs

Maple

A010696 := proc(n) op( (n mod 2)+1,[2,6]) ; end: A086892 := proc(n) gcd(2^n-1,3^n-1) ; end:
A141498 := proc(n) A010696(n-1)* A086892(n) ; end: seq(A141498(n),n=1..80) ; # R. J. Mathar, Sep 03 2009

Extensions

Offset modified, extended by R. J. Mathar, Sep 03 2009