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A071308 1/2 number of n X n 0..9 matrices with MM' mod 10 = I. 0
1, 8, 720, 691200, 6739200000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..5.

CROSSREFS

Sequence in context: A116245 A277860 A221198 * A046188 A014387 A220641

Adjacent sequences:  A071305 A071306 A071307 * A071309 A071310 A071311

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 11 2002

STATUS

approved

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Last modified July 17 18:47 EDT 2019. Contains 325109 sequences. (Running on oeis4.)