Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1110-0111-0100 pattern in any orientation.
A146733
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1110-0111-0100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =7a(6) =21a(7) =51a(8) =221a(9) =1241a(10) =9517a(11) =82699a(12) =831417a(13) =10562039a(14) =171512909a(15) =3474881423a(16) =89012624955
External references
- oeis: A146733