Number of non-equivalent (mod D_3) ways to place 6 indistinguishable points on a triangular grid of side n so that no two of them are adjacent.
A279446
Number of non-equivalent (mod D_3) ways to place 6 indistinguishable points on a triangular grid of side n so that no two of them are adjacent.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =66a(4) =2096a(5) =25676a(6) =187984a(7) =983172a(8) =4073312a(9) =14196011a(10) =43309138a(11) =118818916a(12) =298926225a(13) =699619679a(14) =1540212590a(15) =3217045155a(16) =6419240369a(17) =12304959047a(18) =22763742133a(19) =40797668697a(20) =71065355815a(21) =120643462032a(22) =200077436639a(23) =324808463585a(24) =517088445952a(25) =808515893580
External references
- oeis: A279446