Triangle T(n,k) giving number of fixed 3 X k polyominoes with n cells (n >= 3, 1<=k<=n-2).

Terms

a(0) =1a(1) =0a(2) =8a(3) =0a(4) =6a(5) =25a(6) =0a(7) =1a(8) =44a(9) =50a(10) =0a(11) =0a(12) =32a(13) =154a(14) =83a(15) =0a(16) =0a(17) =9a(18) =212a(19) =376a(20) =124a(21) =0a(22) =0a(23) =1a(24) =158a(25) =784a(26) =750a(27) =173a(28) =0a(29) =0