Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 4 X 4 X 4 subtriangle summing to 4.

A154042

Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 4 X 4 X 4 subtriangle summing to 4.

Terms

    a(0) =715a(1) =3278a(2) =7090a(3) =8188a(4) =5593a(5) =4377a(6) =1618a(7) =601a(8) =228a(9) =220a(10) =220a(11) =220a(12) =220a(13) =220a(14) =220a(15) =220a(16) =220a(17) =220a(18) =220a(19) =220a(20) =220a(21) =220a(22) =220a(23) =220a(24) =220a(25) =220a(26) =220a(27) =220a(28) =220a(29) =220

External references