Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 0100-1111-0010 pattern in any orientation.
A146370
Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 0100-1111-0010 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =1a(11) =1a(12) =5a(13) =5a(14) =13a(15) =13a(16) =31a(17) =31a(18) =121a(19) =121a(20) =491a(21) =491a(22) =3363a(23) =3363a(24) =25731a(25) =25731a(26) =206631a(27) =206631a(28) =2160127a(29) =2160127
External references
- oeis: A146370