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A119022 Inverse binomial transform of A119020, even-indexed terms only, since all odd-indexed terms are equal to zero. 2
1, 1, 4, 20, 154, 1302, 12672, 129558, 1462890, 17537234, 223689128, 2959757528, 40637432332, 573938538500, 8324542177200, 123276663007740, 1861540558106490, 28613268804680010, 447616821726181800 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

A119020 is the eigenvector of triangle A055151 of Motzkin polynomial coefficients.

LINKS

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

FORMULA

a(n) = A119020(n)*C(2n,n)/(n+1) = A119020(n)*A000108(n).

CROSSREFS

Cf. A119020, A119021, A000108 (Catalan).

Sequence in context: A247331 A167018 A094070 * A006682 A115852 A058381

Adjacent sequences:  A119019 A119020 A119021 * A119023 A119024 A119025

KEYWORD

nonn

AUTHOR

Paul D. Hanna, May 09 2006

STATUS

approved

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Last modified September 22 16:30 EDT 2020. Contains 337291 sequences. (Running on oeis4.)