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A118927 Self-convolution square-root of A118926. 1
1, 1, 3, 11, 47, 219, 1083, 5597, 29933, 164547, 925289, 5303409, 30898069, 182587159, 1092498017, 6609496707, 40383429717, 248940496629, 1546962207417, 9683696676693, 61024927547241, 386936560902269, 2467341175475253 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..22.

EXAMPLE

A118926 satisfies: A118926(n) = Sum_{k=0,[n/2]} A104546(n,k)*A118926(k),

where A104546(n,k) is the number of Schroeder paths of length 2n and having k platforms. Is this sequence always integer?

CROSSREFS

Cf. A118926, A104546.

Sequence in context: A247313 A262607 A059284 * A217216 A301409 A295539

Adjacent sequences:  A118924 A118925 A118926 * A118928 A118929 A118930

KEYWORD

nonn

AUTHOR

Paul D. Hanna, May 06 2006

STATUS

approved

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Last modified August 10 14:50 EDT 2020. Contains 336381 sequences. (Running on oeis4.)