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A068548 Coefficients of (-x^(2n-6)) in Chebyshev polynomial of degree 2n. 0
1, 32, 400, 3584, 26880, 180224, 1118208, 6553600, 36765696, 199229440, 1049624576, 5402263552, 27262976000, 135291469824, 661693399040, 3195455668224, 15260018802688, 72155450572800, 338168545017856 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..19.

Index entries for linear recurrences with constant coefficients, signature (16,-96,256,-256).

FORMULA

a(n) = n(2n^2+3n-2)/12 * 4^n. - Ralf Stephan, May 08 2004

G.f. x*( 1+16*x-16*x^2 ) / (4*x-1)^4 . - R. J. Mathar, May 20 2013

CROSSREFS

Sequence in context: A086942 A247995 A247996 * A195191 A275232 A061594

Adjacent sequences:  A068545 A068546 A068547 * A068549 A068550 A068551

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre, Mar 22 2002

STATUS

approved

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Last modified February 25 12:53 EST 2021. Contains 341607 sequences. (Running on oeis4.)