Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 4 X 4 X 4 subtriangle summing to 10.
A154078
Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 4 X 4 X 4 subtriangle summing to 10.
Terms
- a(0) =378a(1) =3930a(2) =3121a(3) =12164a(4) =6241a(5) =21168a(6) =6550a(7) =13276a(8) =3181a(9) =6207a(10) =1260a(11) =3165a(12) =1024a(13) =3226a(14) =983a(15) =2793a(16) =935a(17) =3076a(18) =935a(19) =2781a(20) =935a(21) =3076a(22) =935a(23) =2781a(24) =935a(25) =3076a(26) =935a(27) =2781a(28) =935a(29) =3076
External references
- oeis: A154078