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 13.
A154088
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 13.
Terms
- a(0) =0a(1) =632a(2) =4434a(3) =0a(4) =5545a(5) =25834a(6) =0a(7) =14701a(8) =52378a(9) =0a(10) =10551
External references
- oeis: A154088