Number of ways to arrange 4 indistinguishable points on an n X n X n triangular grid so that no three points are in the same row or diagonal.
A194476
Number of ways to arrange 4 indistinguishable points on an n X n X n triangular grid so that no three points are in the same row or diagonal.
Terms
- a(0) =0a(1) =0a(2) =6a(3) =114a(4) =879a(5) =4284a(6) =15729a(7) =47565a(8) =124803a(9) =293733a(10) =634293a(11) =1277133a(12) =2426424a(13) =4389567a(14) =7615062a(15) =12739902a(16) =20647962a(17) =32540958a(18) =50023656a(19) =75205116a(20) =110817861a(21) =160356966a(22) =228241167a(23) =319998195a(24) =442476645a(25) =604086795a(26) =815072895a(27) =1087819551
External references
- oeis: A194476