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A144692
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G.f.: A(x) = x/Series_Reversion[x*G(x)] where A(x*G(x)) = G(x) = g.f. of A144691.
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3
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1, 1, 1, 0, 17, 0, 408, 0, 69473, 0, 6018928, 0, 1363916728, 0, 219434809664, 0, 184186824259233, 0, 57411426894898072, 0, 38606038922780709192, 0, 16136153318586799828504, 0, 20401945614919621585224136, 0, 12864310266687158415460633528, 0
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,5
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COMMENTS
| Do the zeros continue to appear every other term?
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EXAMPLE
| G.f.: A(x) = 1 + x + x^2 + 17*x^4 + 408*x^6 + 69473*x^8 + 6018928*x^10 +...
satisfies: A(x*G(x)) = G(x) = g.f. of A144691 where
G(x) = 1 + x + 2*x^2 + 4*x^3 + 26*x^4 + 106*x^5 + 816*x^6 + 4292*x^7 +...
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CROSSREFS
| Cf. A144691.
Sequence in context: A002488 A198631 A185685 * A176728 A088469 A089170
Adjacent sequences: A144689 A144690 A144691 * A144693 A144694 A144695
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KEYWORD
| nonn
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AUTHOR
| Paul D. Hanna (pauldhanna(AT)juno.com), Oct 10 2008
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EXTENSIONS
| a(14) corrected and a(16)-a(23) added by Max Alekseyev (maxale(AT)gmail.com), May 03 2011
a(24)-a(27) from Max Alekseyev (maxale(AT)gmail.com), Dec 19 2011
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