Number of lower triangles of a 3 X 3 0..n array with no element differing from any of its horizontal or vertical neighbors by more than one.
A194932
Number of lower triangles of a 3 X 3 0..n array with no element differing from any of its horizontal or vertical neighbors by more than one.
Terms
- a(0) =64a(1) =217a(2) =386a(3) =557a(4) =728a(5) =899a(6) =1070a(7) =1241a(8) =1412a(9) =1583a(10) =1754a(11) =1925a(12) =2096a(13) =2267a(14) =2438a(15) =2609a(16) =2780a(17) =2951a(18) =3122a(19) =3293a(20) =3464a(21) =3635a(22) =3806a(23) =3977a(24) =4148a(25) =4319a(26) =4490a(27) =4661a(28) =4832a(29) =5003
External references
- oeis: A194932