T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 01010101 or 01010111.
A260138
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 01010101 or 01010111.
Terms
- a(0) =36a(1) =58a(2) =58a(3) =138a(4) =128a(5) =138a(6) =266a(7) =342a(8) =342a(9) =266a(10) =472a(11) =730a(12) =1162a(13) =730a(14) =472a(15) =944a(16) =1626a(17) =2966a(18) =2966a(19) =1626a(20) =944a(21) =1880a(22) =3928a(23) =7698a(24) =8292a(25) =7698a(26) =3928a(27) =1880a(28) =3562a(29) =8998
External references
- oeis: A260138