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Search: id:A158828
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| A158828 |
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The 5-th iteration of x*C(x) where C(x) is the Catalan function (A000108). |
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5
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| 1, 5, 30, 195, 1330, 9380, 67844, 500619, 3755156, 28558484, 219767968, 1708590960, 13403300208, 105983648060, 844009565176, 6764300053390, 54525119251104, 441811163402124, 3597005618194848, 29412560840221272
(list; graph; listen)
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OFFSET
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1,2
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PROGRAM
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(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)}
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CROSSREFS
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Cf. A158825, A158826, A158827, A158829.
Sequence in context: A059273 A038744 A098663 this_sequence A034164 A103433 A081015
Adjacent sequences: A158825 A158826 A158827 this_sequence A158829 A158830 A158831
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KEYWORD
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nonn
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com), Mar 28 2009
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