A069641 Let M_n be the n X n matrix with M_n(i,j)=1/(i+j+2); then a(n)=1/det(M_n).

4, 600, 2116800, 149361408000, 195185487974400000, 4526188681429365350400000, 1814098233992362204186460160000000, 12350461816416310792905806186828267520000000

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Prog

(PARI) for(n=1, 10, print1(1/matdet(matrix(n, n, i, j, 1/(i+j+2))), ", "))

Crossrefs

Sequence in context: A086143 A123657 A195580 * A215920 A210853 A232620

Adjacent sequences: A069638 A069639 A069640 * A069642 A069643 A069644

Keyword

easy,nonn

Author

Benoit Cloitre, Apr 21 2002

Status

approved