T(n,k)=Number of lower triangles of an n X n 0..k array with no element differing from any of its horizontal or vertical neighbors by more than one.

A194931

T(n,k)=Number of lower triangles of an n X n 0..k array with no element differing from any of its horizontal or vertical neighbors by more than one.

Terms

    a(0) =2a(1) =3a(2) =8a(3) =4a(4) =17a(5) =64a(6) =5a(7) =26a(8) =217a(9) =1024a(10) =6a(11) =35a(12) =386a(13) =5873a(14) =32768a(15) =7a(16) =44a(17) =557a(18) =12474a(19) =344091a(20) =2097152a(21) =8a(22) =53a(23) =728a(24) =19379a(25) =882318a(26) =43337009a(27) =268435456a(28) =9a(29) =62

External references