Number of (7*n) X n binary arrays with rows in nonincreasing order, 7 ones in every column and no more than 2 ones in any row.
A188408
Number of (7*n) X n binary arrays with rows in nonincreasing order, 7 ones in every column and no more than 2 ones in any row.
Terms
- a(0) =1a(1) =1a(2) =8a(3) =154a(4) =7340a(5) =681460a(6) =111200600a(7) =29445929253
External references
- oeis: A188408