Number of ways to arrange 4 indistinguishable points on an n X n X n triangular grid so that no four points are in the same row or diagonal.
A194481
Number of ways to arrange 4 indistinguishable points on an n X n X n triangular grid so that no four points are in the same row or diagonal.
Terms
- a(0) =0a(1) =0a(2) =15a(3) =207a(4) =1347a(5) =5922a(6) =20307a(7) =58527a(8) =148239a(9) =339669a(10) =718344a(11) =1422564a(12) =2666664a(13) =4771221a(14) =8201466a(15) =13615266a(16) =21922146a(17) =34354926a(18) =52555653a(19) =78677613a(20) =115505313a(21) =166594428a(22) =236433813a(23) =330631785a(24) =456128985a(25) =621440235a(26) =836927910a(27) =1115109450
External references
- oeis: A194481