A006563 (2*n)!-Sum ((-1)^(i+1)*binomial(n,i)*2^i*(2*i-1)!,i=1..n).

1, 0, 44, -174, 117256, -7589530, 2965194588, -692238710870, 349381845013136, -172725188707732914, 125191334490221307940, -102149999612542557845422, 105262879332307879142908440, -125296099002304850701565276234

Offset

0,3

Links

Table of n, a(n) for n=0..13.

Crossrefs

Sequence in context: A010023 A084026 A235407 * A159033 A238249 A189547

Adjacent sequences: A006560 A006561 A006562 * A006564 A006565 A006566

Keyword

sign

Author

N. J. A. Sloane.

Status

approved