Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0111-0100 pattern in any orientation.

A146464

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0111-0100 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =7a(6) =21a(7) =55a(8) =263a(9) =1645a(10) =13423a(11) =126629a(12) =1447199a(13) =21743065a(14) =415978809a(15) =9965909653a(16) =303132585251

External references