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A013470 Coefficient of [x^(4*n+2)] in e.g.f. sin(cos(x) - cosh(x)). 0
-2, 118, -25202, 7567558, 2826256798, -14573118501482, -6535594068553682, 260913788268313031398, 425088959122294634122558, -25651592227639570801390633802, -191452930887085308581148320293682, 8951371730395255528928644148861984518 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..11.

EXAMPLE

-(2/2!)*x^2 + (118/6!)*x^6 - (25202/10!)*x^10 + (7567558/14!)*x^14 + ...

MATHEMATICA

DeleteCases[ Range[0, 46]! CoefficientList[ Series[Sin[Cos[x] - Cosh[x]], {x, 0, 46}], x], 0] (* Robert G. Wilson v, Aug 06 2018 *)

CROSSREFS

Sequence in context: A024243 A307094 A147774 * A013511 A013507 A013476

Adjacent sequences:  A013467 A013468 A013469 * A013471 A013472 A013473

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

EXTENSIONS

a(0)=-2, more terms, and title improved by Sean A. Irvine, Aug 06 2018

STATUS

approved

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Last modified September 21 07:28 EDT 2021. Contains 347596 sequences. (Running on oeis4.)