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A117437
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E.g.f. exp(x)sec(2x).
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2
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1, 1, 5, 13, 105, 441, 5165, 30213, 469585, 3529201, 68525525, 629401213, 14664091065, 159175688361, 4326609913085, 54189700721013, 1683369010256545, 23894940183997921, 835066388382183845, 13248060325188261613
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| Row sums of A117436. Binomial transform of A002436 (with interpolated zeros).
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MATHEMATICA
| With[{nn=30}, CoefficientList[Series[Exp[x]Sec[2x], {x, 0, nn}], x] Range[0, nn]!] (* From Harvey P. Dale, Dec 13 2011 *)
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CROSSREFS
| Sequence in context: A123622 A117340 A180827 * A179089 A106046 A180362
Adjacent sequences: A117434 A117435 A117436 * A117438 A117439 A117440
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KEYWORD
| easy,nonn
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AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Mar 16 2006
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