143191

Appears in sequences

• Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 3 ones in any 5 X 5 X 5 subtriangle.at n=20A153928
• 1/16 the number of (n+1)X5 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.at n=4A183806
• 1/16 the number of (n+1)X6 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.at n=3A183807
• T(n,k)=1/16 the number of (n+1)X(k+1) binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.at n=31A183811
• T(n,k)=1/16 the number of (n+1)X(k+1) binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.at n=32A183811