A153565 - OEIS

A153565

Number of planar n X n X n binary triangular grids with no more than 3 ones in any similarly oriented 5 X 5 X 5 subtriangle.

%I #5 Apr 28 2021 00:10:28

%S 1,2,8,42,176,576,5196,73620,1358751,28558756,692751617,26643595004,

%T 1466710451867,108327240281718,10438694555033407

%N Number of planar n X n X n binary triangular grids with no more than 3 ones in any similarly oriented 5 X 5 X 5 subtriangle.

%K nonn

%O 0,2

%A _R. H. Hardin_, Jan 01 2009