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A171205
G.f. satisfies: A(x) = (1 + x*A(2x))^5.
3
1, 5, 60, 1410, 62505, 5284401, 868838010, 281703950040, 181448450339760, 232989133846286240, 597389845561440183360, 3061032714235774931187200, 31357237236616342838622807040, 642321739861948533960660029617920
OFFSET
0,2
FORMULA
Self-convolution 5th power of A171204 where a(n) = A171204(n+1)/2^n for n>=0.
PROG
(PARI) {a(n)=local(A=1+x+x*O(x^n)); for(i=0, n, A=(1+x*subst(A, x, 2*x))^5); polcoeff(A, n)}
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 05 2009
STATUS
approved