Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-0111-0100 pattern in any orientation.

A146468

Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-0111-0100 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =21a(6) =61a(7) =413a(8) =1837a(9) =12959a(10) =107653a(11) =1592585a(12) =19952617a(13) =467249637a(14) =9827027521a(15) =347403836941

External references