Array read by antidiagonals: T(m,n) is the number of induced cycles in the rook graph K_m X K_n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =1a(5) =1a(6) =4a(7) =5a(8) =5a(9) =4a(10) =10a(11) =14a(12) =21a(13) =14a(14) =10a(15) =20a(16) =30a(17) =58a(18) =58a(19) =30a(20) =20a(21) =35a(22) =55a(23) =125a(24) =236a(25) =125a(26) =55a(27) =35a(28) =56a(29) =91