Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0110-1100-0111 pattern in any orientation.
A146806
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0110-1100-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =13a(6) =47a(7) =229a(8) =1275a(9) =4761a(10) =35421a(11) =393783a(12) =4470765a(13) =65085801a(14) =1244085727
External references
- oeis: A146806