T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 or 01010101.
A259742
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 or 01010101.
Terms
- a(0) =20a(1) =22a(2) =22a(3) =42a(4) =36a(5) =42a(6) =62a(7) =74a(8) =74a(9) =62a(10) =101a(11) =136a(12) =190a(13) =136a(14) =101a(15) =152a(16) =230a(17) =374a(18) =374a(19) =230a(20) =152a(21) =265a(22) =414a(23) =792a(24) =868a(25) =792a(26) =414a(27) =265a(28) =382a(29) =760
External references
- oeis: A259742