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A145075
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Coefficient of x^(5^n) in Q(x)^(n+1), where Q(x) = Sum_{k>=0} (x^(5^k) + x^(2*5^k) + x^(3*5^k) + x^(4*5^k)).
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3
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1, 4, 18, 172, 1881, 25644, 411488, 7581792, 157296141, 3630709734, 92225760033, 2556393882912, 76774488792326, 2483261807354874
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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PROG
| (PARI) {a(n, q=5)=local(Q=sum(j=0, n, (x^(q^j)-x^(q*q^j))/(1-x^(q^j)+O(x^(q^n+1))))); polcoeff(Q^(n+1), q^n)}
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CROSSREFS
| Cf. A007178, A145073, A145074, A145076.
Sequence in context: A054759 A007153 A156870 * A058924 A154731 A201346
Adjacent sequences: A145072 A145073 A145074 * A145076 A145077 A145078
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KEYWORD
| more,nonn
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AUTHOR
| Paul D. Hanna (pauldhanna(AT)juno.com), Oct 09 2008
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EXTENSIONS
| a(7)-a(13) from Max Alekseyev (maxale(AT)gmail.com), Dec 19 2011
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