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 14.
A154091
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 14.
Terms
- a(0) =15444a(1) =106446a(2) =294845a(3) =765100a(4) =1132408a(5) =1998601a(6) =2586773a(7) =2366585a(8) =1788843a(9) =1141243a(10) =542455
External references
- oeis: A154091