Binomial self-convolution of sequence A209305.

A209307

Binomial self-convolution of sequence A209305.

Terms

    a(0) =1a(1) =2a(2) =8a(3) =52a(4) =492a(5) =6172a(6) =96572a(7) =1810940a(8) =39585980a(9) =988367804a(10) =27750071036a(11) =865420762876

External references