Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1100-0111 pattern in any orientation.

A146392

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1100-0111 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =9a(6) =23a(7) =77a(8) =415a(9) =2809a(10) =21039a(11) =202829a(12) =2557861a(13) =41110329a(14) =812468577a(15) =20241517719a(16) =638623731453

External references