Triangle read by rows: T(n, m) for 0 <= m <= n is the number of bipartite connected labeled graphs with parts of size n and m.
A227322
Triangle read by rows: T(n, m) for 0 <= m <= n is the number of bipartite connected labeled graphs with parts of size n and m.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =0a(4) =1a(5) =5a(6) =0a(7) =1a(8) =19a(9) =205a(10) =0a(11) =1a(12) =65a(13) =1795a(14) =36317a(15) =0a(16) =1a(17) =211a(18) =14221a(19) =636331a(20) =23679901a(21) =0a(22) =1a(23) =665a(24) =106819a(25) =10365005a(26) =805351531a(27) =56294206205a(28) =0a(29) =1
External references
- oeis: A227322