Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 10001-11111 pattern in any orientation.
A147088
Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 10001-11111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =3a(9) =1a(10) =5a(11) =1a(12) =7a(13) =1a(14) =22a(15) =5a(16) =57a(17) =13a(18) =165a(19) =33a(20) =836a(21) =133a(22) =3941a(23) =443a(24) =19907a(25) =1649a(26) =132005
External references
- oeis: A147088