Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 5 X 5 X 5 subtriangle summing to 15.
A154094
Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 5 X 5 X 5 subtriangle summing to 15.
Terms
- a(0) =22308a(1) =168794a(2) =505725a(3) =1434840a(4) =2268199a(5) =4350854a(6) =6106648a(7) =6385418a(8) =5120411
External references
- oeis: A154094