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A158828 The 5th iteration of x*C(x) where C(x) is the Catalan function (A000108). 4
1, 5, 30, 195, 1330, 9380, 67844, 500619, 3755156, 28558484, 219767968, 1708590960, 13403300208, 105983648060, 844009565176, 6764300053390, 54525119251104, 441811163402124, 3597005618194848, 29412560840221272 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..20.

Elżbieta Liszewska, Wojciech Młotkowski, Some relatives of the Catalan sequence, arXiv:1907.10725 [math.CO], 2019.

PROG

(PARI) {a(n)=local(F=serreverse(x-x^2+O(x^(n+1))), G=x); for(i=1, 5, G=subst(F, x, G)); polcoeff(G, n)}

CROSSREFS

Cf. A158825, A158826, A158827, A158829.

Sequence in context: A038744 A098663 A265085 * A264910 A196471 A265279

Adjacent sequences:  A158825 A158826 A158827 * A158829 A158830 A158831

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Mar 28 2009

STATUS

approved

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Last modified July 2 09:21 EDT 2020. Contains 335398 sequences. (Running on oeis4.)