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A024253
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Expansion of sin(sin(x)).x/2.
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2
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0, 1, -4, 36, -512, 9360, -225600, 6935488, -258670592, 11453942016, -595273139200, 35778886145024, -2452254890065920, 189732604997505024, -16441271556334370816, 1583926386391039918080, -168491094250200804360192
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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LINKS
| Harvey P. Dale, Table of n, a(n) for n = 0..100
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MATHEMATICA
| With[{nn=40}, Take[CoefficientList[Series[Sin[Sin[x]]x/2, {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* From Harvey P. Dale, Oct 04 2011 *)
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CROSSREFS
| A009478.
Sequence in context: A094417 A138435 A008546 * A052746 A145084 A179422
Adjacent sequences: A024250 A024251 A024252 * A024254 A024255 A024256
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KEYWORD
| sign
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AUTHOR
| R. H. Hardin (rhhardin(AT)att.net)
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EXTENSIONS
| Extended with signs 03/97.
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