A088793 G.f. satisfies: A(x)*(1-x) = 1 + x^2*A(x*A(x)).

1, 1, 2, 3, 6, 15, 43, 135, 462, 1708, 6752, 28302, 125036, 579709, 2811084, 14216095, 74788529, 408388370, 2310191935, 13514877249, 81639455600, 508524173808, 3262111727548, 21525758405136, 145957394683691, 1015949479338974

Offset

0,3

Links

Table of n, a(n) for n=0..25.

Crossrefs

Sequence in context: A120589 A110181 A141351 * A393748 A322197 A368954

Adjacent sequences: A088790 A088791 A088792 * A088794 A088795 A088796

Keyword

nonn

Author

_Paul D. Hanna_, Oct 16 2003

Status

approved