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A100938
Self-convolution of A092684.
1
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
0,2
COMMENTS
A092684 is the leftmost column of triangle A092683.
FORMULA
a(n) = 1 + Sum_{k=1..n} Sum_{j=0..n-k} binomial(k, j)*a(j).
PROG
(PARI) {a(n)=1+sum(k=1, n, sum(j=0, n-k, binomial(k, j)*a(j)))}
CROSSREFS
Sequence in context: A026655 A336484 A244398 * A018004 A124329 A144520
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Nov 23 2004
STATUS
approved