A154075 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 9.

1650, 6592, 10881, 16801, 14513, 14220, 11083, 6900, 3475, 1606, 588, 460, 253, 244, 241, 240, 300, 240, 240, 240, 240, 300, 240, 240, 240, 240, 300, 240, 240, 240, 240, 300, 240, 240, 240, 240, 300, 240, 240, 240, 240, 300, 240, 240, 240, 240, 300, 240, 240