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A145160
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G.f. A(x) satisfies A(x/A(x)^3) = 1/(1-x).
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5
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1, 1, 4, 31, 347, 4860, 79174, 1440837, 28584939, 608533714, 13751688892, 327333165775, 8160149459870, 212121519165566, 5730205766494409, 160425928432680795, 4644491031188023566, 138792548776938444503
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OFFSET
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0,3
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LINKS
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FORMULA
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G.f. satisfies: 1 - 1/A(x) = x*A( 1 - 1/A(x) )^3.
Self-convolution cube yields A145161.
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PROG
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(PARI) {a(n)=local(A=1+x+x*O(x^n)); for(n=0, n, B=serreverse(x/A^3); A=1/(1-B)); polcoeff(A, n)}
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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