A067218 Number of n X n 0..10 matrices with all row and column sums equal.

1, 11, 121, 48983, 1950230969, 7169135482380621, 2543060905110036322914145, 90495116991790689711315590295804971

Offset

0,2

Links

Table of n, a(n) for n=0..7.

Crossrefs

Column k=10 of A202784.

Sequence in context: A216208 A110398 A176595 * A368114 A293805 A358697

Adjacent sequences: A067215 A067216 A067217 * A067219 A067220 A067221

Keyword

nonn,more

Author

R. H. Hardin, Feb 20 2002

Extensions

a(5)-a(7) from Sean A. Irvine, Dec 12 2023

a(0)=1 prepended by Andrew Howroyd, Oct 14 2024

Status

approved