Number of (0,1)-matrices with sum of entries equal to n and no zero rows or columns, with weakly decreasing row sums and column sums.
A068313
Number of (0,1)-matrices with sum of entries equal to n and no zero rows or columns, with weakly decreasing row sums and column sums.
Terms
- a(0) =1a(1) =4a(2) =15a(3) =82a(4) =457a(5) =3231a(6) =24055a(7) =209375a(8) =1955288a(9) =20455936a(10) =229830841a(11) =2828166755a(12) =37228913365a(13) =528635368980
External references
- oeis: A068313