Number of nonequivalent ways (mod D_3) to place 5 points on an n X n X n triangular grid so that no two of them are on the same row, column or diagonal.
A283116
Number of nonequivalent ways (mod D_3) to place 5 points on an n X n X n triangular grid so that no two of them are on the same row, column or diagonal.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =45a(8) =533a(9) =3546a(10) =16917a(11) =64345a(12) =207327a(13) =587922a(14) =1505924a(15) =3549610a(16) =7806420a(17) =16188690a(18) =31919658a(19) =60238044a(20) =109392480a(21) =192015912a(22) =326985561a(23) =541900545a(24) =876326275a(25) =1385991432a(26) =2148140345a(27) =3268293567a(28) =4888684275a(29) =7198705228
External references
- oeis: A283116