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 A195068 G.f. satisfies: A(x) = Sum{n>=0} x^n * A(n*x)^n. 0
 1, 1, 2, 7, 37, 279, 2919, 42011, 833314, 22937285, 882905932, 47833330376, 3664667588132, 398332024544864, 61567508987316736, 13553812089298857340, 4254977588443309549759, 1906584878492298737985244, 1220249817955981418494900097 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS EXAMPLE G.f.: A(x) = 1 + x + 2*x^2 + 7*x^3 + 37*x^4 + 279*x^5 + 2919*x^6 +... where: A(x) = 1 + x*A(x) + x^2*A(2*x)^2 + x^3*A(3*x)^3 + x^4*A(4*x)^4 + x^5*A(5*x)^5 +... PROG (PARI) {a(n)=local(A=1+x+x*O(x^n)); for(k=1, n, A=1+sum(j=1, n, x^j*subst(A, x, j*x)^j)); polcoeff(A, n)} CROSSREFS Sequence in context: A001028 A116481 A102743 * A196916 A182331 A173762 Adjacent sequences:  A195065 A195066 A195067 * A195069 A195070 A195071 KEYWORD nonn AUTHOR Paul D. Hanna, Sep 08 2011 STATUS approved

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Last modified July 19 11:12 EDT 2019. Contains 325158 sequences. (Running on oeis4.)