A153568 Number of planar n X n X n binary triangular grids with no more than 6 ones in any similarly oriented 5 X 5 X 5 subtriangle.
1, 2, 8, 64, 848, 9949, 298247, 16406435, 1545911495, 236576023548, 58010755690276, 25220215282781623
Offset: 0