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A069643 Let M_n be the n X n matrix with M_n(i,j)=1/(i+j+4); then a(n)=1/det(M_n). 0
6, 2352, 30481920, 9958443264000, 71274072206937600000, 10284003594061010227814400000, 28352758990854707972694688215859200000, 1439725057274629036644686315831322105348096000000 (list; graph; refs; listen; history; text; internal format)
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+4))), ", "))

CROSSREFS

Sequence in context: A279654 A198403 A279533 * A264801 A067630 A181700

Adjacent sequences:  A069640 A069641 A069642 * A069644 A069645 A069646

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre, Apr 21 2002

STATUS

approved

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Last modified February 24 05:48 EST 2018. Contains 299597 sequences. (Running on oeis4.)