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A088794 Coefficient of x^n in A(x)^(2n) is A004123(n); self-convolution is A088222. 0
1, 1, 1, 4, 30, 305, 3905, 59828, 1063728, 21497921, 486476766, 12184618776, 334684804952, 10005219881472, 323438539163521, 11244331792094312, 418375698771595037, 16590419690069321454, 698526596162530976512 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..18.

CROSSREFS

Cf. A088222, A004123.

Sequence in context: A052452 A307905 A292629 * A239841 A145348 A052574

Adjacent sequences:  A088791 A088792 A088793 * A088795 A088796 A088797

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Oct 23 2003

STATUS

approved

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Last modified August 17 17:25 EDT 2019. Contains 326059 sequences. (Running on oeis4.)