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A007301 From expansion of exp(sin x).
(Formerly M2296)
1
1, 1, -3, -3, 217, -2951, 5973, 1237173, -52635599, 1126610929, 20058390573, -3920482183827, 256734635981833, -8529964147714967, -383670903748980603, 99786978811973617701, -10380441423510120242591, 594094494902602207843297 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=0..17.

FORMULA

a(n) = A002017(2n).

MATHEMATICA

With[{nn=40}, Take[CoefficientList[Series[Exp[Sin[x]], {x, 0, nn}], x] Range[ 0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Dec 22 2018 *)

CROSSREFS

Sequence in context: A273925 A113457 A113466 * A009715 A292163 A242886

Adjacent sequences:  A007298 A007299 A007300 * A007302 A007303 A007304

KEYWORD

sign,easy

AUTHOR

N. J. A. Sloane

EXTENSIONS

Extended with signs by Christian G. Bower, Oct 1998

STATUS

approved

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Last modified March 26 01:08 EDT 2019. Contains 321479 sequences. (Running on oeis4.)