61786domain: NAppears in sequencesNumber of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 12 ones in any 5 X 5 X 5 subtriangle.at n=7A153998Number of (w,x,y,z) with all terms in {1,...,n} and 3w>=x+y+z+n.at n=24A212250