2094318domain: NAppears in sequencesNumber of planar n X n X n binary triangular grids with no more than 13 ones in any 5 X 5 X 5 subtriangle.at n=6A153547Number of planar n X n X n binary triangular grids with no more than 13 ones in any similarly oriented 5 X 5 X 5 subtriangle.at n=6A153575