A153901 Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 1 one in any 3 X 3 X 3 subtriangle.

1, 2, 1, 1, 3, 2, 2, 7, 3, 6, 15, 12, 17, 63, 47, 86, 272, 269, 423, 2020, 1609, 3902, 14951, 18193, 36083, 200112, 201396, 575152, 2652677, 3907855, 9200561