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A214445 Euler(2*n)*binomial(4*n,2*n). 2
1, -6, 350, -56364, 17824950, -9334057876, 7308698191340, -7997684730384600, 11655857682806336550, -21824608434847162167300, 51054382673481634917970500, -145916894745749901373155951720 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Central column of the nonzero coefficients of the Swiss-Knife polynomials, a(n) = A153641(4*n, 2*n).

LINKS

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

PROG

(Sage)

def A214445(n) : return binomial(4*n, 2*n)*euler_number(2*n)

CROSSREFS

Cf. A153641.

Sequence in context: A211089 A221923 A000409 * A059415 A246112 A197780

Adjacent sequences:  A214442 A214443 A214444 * A214446 A214447 A214448

KEYWORD

sign

AUTHOR

Peter Luschny, Jul 18 2012

STATUS

approved

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Last modified September 24 14:46 EDT 2020. Contains 337321 sequences. (Running on oeis4.)