Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1001-1111-0100 pattern in any orientation.

A146838

Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1001-1111-0100 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =21a(6) =51a(7) =217a(8) =1233a(9) =6449a(10) =45131a(11) =442147a(12) =4714111a(13) =71906123a(14) =1148024329a(15) =26742683865a(16) =642806579973

External references