A237887 Numerator of a(n) where a(0) = a(1) = a(2) = 1, a(n) * (a(n) + a(n+3)) = (a(n) + 2*a(n+2)) * (a(n) + a(n+2)).

1, 1, 1, 5, 65, 8621, 149184857, 44551677001092773, 3970578415163336458099984005568433, 31532720313075764582758396083530822599715967108537469217279098897853

Offset

0,4

Links

Table of n, a(n) for n=0..9.

Crossrefs

Cf. A237914.

Sequence in context: A012476 A195516 A167536 * A042491 A183899 A263784

Adjacent sequences: A237884 A237885 A237886 * A237888 A237889 A237890

Keyword

nonn

Author

Michael Somos, Feb 15 2014

Status

approved