A067217 Number of n X n 0..9 matrices with all row and column sums equal.

10, 100, 30502, 754898668, 1426274971770170, 214919363287707751206910, 2685049440186600182381381075290270

Offset

1,1

Links

Table of n, a(n) for n=1..7.

Crossrefs

Sequence in context: A135651 A220812 A139103 * A266175 A304237 A304238

Adjacent sequences: A067214 A067215 A067216 * A067218 A067219 A067220

Keyword

nonn,more

Author

R. H. Hardin, Feb 20 2002

Extensions

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

Status

approved