A105188 a(n) = determinant of the n X n matrix m(i,j)=(i+j+3)!/i!/j!.

1, 120, 21600, 6048000, 2540160000, 1536288768000, 1290482565120000, 1460088845107200000, 2168231934984192000000, 4134095556036526080000000, 9931751163822150254592000000, 29578560738801240212766720000000

Offset

0,2

Links

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

Formula

a(n)=(1/288)*(n+1)*(n+2)!*(n+3)!*(n+4)!

Prog

(PARI) a(n)=(1/288)*(n+1)*(n+2)!*(n+3)!*(n+4)!

Crossrefs

Cf. A001286.

Sequence in context: A363516 A289566 A229693 * A264957 A270604 A151604

Adjacent sequences: A105185 A105186 A105187 * A105189 A105190 A105191

Keyword

nonn

Author

Benoit Cloitre, Apr 11 2005

Status

approved