T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010101.
A260841
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010101.
Terms
- a(0) =48a(1) =82a(2) =82a(3) =188a(4) =131a(5) =188a(6) =364a(7) =288a(8) =288a(9) =364a(10) =644a(11) =496a(12) =700a(13) =496a(14) =644a(15) =1320a(16) =796a(17) =1224a(18) =1224a(19) =796a(20) =1320a(21) =2584a(22) =1645a(23) =1560a(24) =2235a(25) =1560a(26) =1645a(27) =2584a(28) =4842a(29) =2976
External references
- oeis: A260841