1725197

Properties

Appears in sequences

• Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 3X3 tee 1,1 1,2 1,3 2,2 3,2 in any orientation.at n=12A146009
• Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 3X3 tee 1,1 1,2 1,3 2,2 3,2 in any orientation.at n=27A146011
• Prime numbersat n=129877