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A027301 a(n) = self-convolution of row n of Catalan triangle (A008315). 0
1, 2, 4, 13, 26, 100, 196, 820, 1581, 6954, 13244, 60214, 113620, 528840, 990756, 4692780, 8741876, 41970280, 77824912, 377687453, 697689538, 3415756084, 6289798684, 31018849628, 56964451670, 282658474700, 517885177320 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..26.

CROSSREFS

Sequence in context: A163986 A189583 A153936 * A153933 A128601 A034500

Adjacent sequences:  A027298 A027299 A027300 * A027302 A027303 A027304

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 21 15:12 EDT 2021. Contains 345364 sequences. (Running on oeis4.)