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A009047
Expansion of cos(sin(x)*cosh(x)), even terms only.
1
1, -1, -7, 23, 1297, -6129, -894903, 829671, 1879275169, 1886150559, -7580265762535, -85001467923145, 61409100961369265, 1056714909891968687, -781355567634874555799, -25440890573992236442361
OFFSET
0,3
LINKS
MATHEMATICA
With[{nn=30}, Take[CoefficientList[Series[Cos[Sin[x]*Cosh[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Nov 12 2017 *)
PROG
(PARI) x='x+O('x^50); v=Vec(serlaplace(cos(sin(x)*cosh(x)))); vector(#v\2, n, v[2*n-1]) \\ G. C. Greubel, Jul 23 2018
CROSSREFS
Sequence in context: A322557 A228699 A159485 * A129662 A012482 A124985
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Previous Mathematica program replaced by Harvey P. Dale, Nov 12 2017
STATUS
approved