Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 11101-10111 pattern in any orientation.

A147492

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 11101-10111 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =5a(7) =13a(8) =29a(9) =115a(10) =371a(11) =1127a(12) =6493a(13) =42101a(14) =265099a(15) =2205911a(16) =20203737a(17) =188160663a(18) =2232930361a(19) =31949821401a(20) =512095816829

External references