206631

Appears in sequences

• Base 4 digits are, in order, the first n terms of the periodic sequence with initial period 3,0,2,1.at n=8A037765
• Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-1111-0010 pattern in any orientation.at n=12A146368
• Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 0100-1111-0010 pattern in any orientation.at n=26A146370
• Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 0100-1111-0010 pattern in any orientation.at n=27A146370