Array read by antidiagonals: T(m,n) is the number of edge cuts in the grid graph P_m X P_n.

Terms

a(0) =0a(1) =1a(2) =1a(3) =3a(4) =11a(5) =3a(6) =7a(7) =105a(8) =105a(9) =7a(10) =15a(11) =919a(12) =3665a(13) =919a(14) =15a(15) =31a(16) =7713a(17) =123215a(18) =123215a(19) =7713a(20) =31a(21) =63a(22) =63351a(23) =4051679a(24) =16222021a(25) =4051679a(26) =63351a(27) =63a(28) =127a(29) =514321