Triangle read by rows: T(n,m) = number of n X m binary matrices with no zero rows or columns (n >= 1, 1 <= m <= n).
A183109
Triangle read by rows: T(n,m) = number of n X m binary matrices with no zero rows or columns (n >= 1, 1 <= m <= n).
Terms
- a(0) =1a(1) =1a(2) =7a(3) =1a(4) =25a(5) =265a(6) =1a(7) =79a(8) =2161a(9) =41503a(10) =1a(11) =241a(12) =16081a(13) =693601a(14) =24997921a(15) =1a(16) =727a(17) =115465a(18) =10924399a(19) =831719761a(20) =57366997447a(21) =1a(22) =2185a(23) =816985a(24) =167578321a(25) =26666530801
External references
- oeis: A183109