A100938 Self-convolution of A092684.

1, 2, 5, 10, 22, 46, 97, 200, 412, 844, 1729, 3536, 7227, 14754, 30093, 61312, 124782, 253664, 515085, 1044796, 2117158, 4286330, 8671103, 17529304, 35416016, 71518510, 144362774, 291299094, 587617054, 1185060666, 2389424213

Offset: 0

Author

Paul D. Hanna, Nov 23 2004

Keywords

• nonn

Comments

A092684 is the leftmost column of triangle A092683.

Crossrefs

Cf. A092684, A092683.

Programs

PARI

{a(n)=1+sum(k=1,n,sum(j=0,n-k,binomial(k,j)*a(j)))}

Formula

a(n) = 1 + Sum_{k=1..n} Sum_{j=0..n-k} binomial(k, j)*a(j).