Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 110-111-111 pattern in any orientation.

A146275

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 110-111-111 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =5a(4) =9a(5) =21a(6) =93a(7) =381a(8) =1551a(9) =7459a(10) =56347a(11) =473995a(12) =4321181a(13) =46467441a(14) =656149111a(15) =10982021937a(16) =211884167843

External references