login
A357768
Number of n X n tables where rows represent distinct permutations of { 1, 2, ..., n } and the column sums are equal, up to permutations of rows and columns.
3
1, 1, 1, 9, 479, 2677443, 797253930582, 20411160794088064950
OFFSET
1,4
CROSSREFS
KEYWORD
hard,more,nonn
AUTHOR
Max Alekseyev, Oct 13 2022
STATUS
approved