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A124464
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Row 4 of rectangular table A124460.
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8
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1, 5, 19, 73, 302, 1325, 6032, 28193, 134825, 659011, 3290110, 16764206, 87103106, 461090076, 2484768459, 13621130998, 75906831145, 429768775851, 2470872560536, 14418770507660, 85367306874021, 512604419523512
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| G.f.: A(x) = Sum_{n>=0} x^n*R_n(x)^4, where R_n(x) is the g.f. of row n in table A124460 and satisfies: R_n(x) = Sum_{k>=0} x^k * R_k(x)^n for n>=0.
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PROG
| (PARI) {a(n)=local(m=max(n, 4), R=vector(m+1, r, vector(m+1, c, binomial(r+c-2, c-1)))); for(i=0, m, for(r=0, m, R[r+1]=Vec(sum(c=0, m, x^c*Ser(R[c+1])^r+O(x^(m+1)))))); R[5][n+1]}
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CROSSREFS
| Cf. A124460 (table); other rows: A124461, A124462, A124463, A124465, A124466.
Sequence in context: A149763 A149764 A149765 * A149766 A098913 A126392
Adjacent sequences: A124461 A124462 A124463 * A124465 A124466 A124467
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KEYWORD
| nonn
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AUTHOR
| Paul D. Hanna (pauldhanna(AT)juno.com), Nov 03 2006
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