Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1110-0100-0111 pattern in any orientation.
A146874
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1110-0100-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =17a(7) =37a(8) =81a(9) =581a(10) =4553a(11) =28101a(12) =163497a(13) =1904517a(14) =29561545a(15) =451624245a(16) =6956479641a(17) =156904159893
External references
- oeis: A146874