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A053484
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Numerators in expansion of exp(2x)/(1-x).
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2
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1, 3, 5, 19, 7, 109, 331, 155, 2327, 20947, 34913, 164591, 691283, 14977801, 314533829, 4718007451, 1572669151, 16041225341, 103122162907, 4571749222213, 68576238333199, 110777000384399, 55582845806909, 364345554264288511
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| a(n) = Numerator[Sum[2^k/k!,{k,0,n}]]. - Alexander Adamchuk (alex(AT)kolmogorov.com), Jul 22 2006
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MATHEMATICA
| Numerator[Table[Sum[2^k/k!, {k, 0, n}], {n, 0, 30}]] - Alexander Adamchuk (alex(AT)kolmogorov.com), Jul 22 2006
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CROSSREFS
| Cf. A053485, A010842.
Sequence in context: A176749 A145774 A128362 * A025046 A180931 A118484
Adjacent sequences: A053481 A053482 A053483 * A053485 A053486 A053487
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KEYWORD
| nonn,frac
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jan 15 2000
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