Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 5 X 5 X 5 subtriangle summing to 14.
A154090
Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 5 X 5 X 5 subtriangle summing to 14.
Terms
- a(0) =0a(1) =877a(2) =6567a(3) =0a(4) =8577a(5) =46236a(6) =0a(7) =21094a(8) =113156a(9) =0
External references
- oeis: A154090