Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1001-1111-0110 pattern in any orientation.

A147420

Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1001-1111-0110 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =9a(6) =23a(7) =64a(8) =295a(9) =1072a(10) =4637a(11) =27060a(12) =195073a(13) =1617157a(14) =15822995a(15) =190207942a(16) =2553434864a(17) =40752029560

External references