Number of n X n binary matrices with no zero rows or columns and with n+2 ones.

A055603

Number of n X n binary matrices with no zero rows or columns and with n+2 ones.

Terms

    a(0) =0a(1) =1a(2) =90a(3) =2248a(4) =43000a(5) =755100a(6) =13003620a(7) =226262400a(8) =4037765760a(9) =74481120000

External references