Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00000101.
A259948
Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00000101.
Terms
- a(0) =365a(1) =1507a(2) =8699a(3) =35765a(4) =141619a(5) =642779a(6) =2922457a(7) =12595119a(8) =54554391a(9) =241207419a(10) =1062079283a(11) =4640861117a(12) =20328211369a(13) =89287996191a(14) =391693962409
External references
- oeis: A259948