T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00000011.
A259894
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00000011.
Terms
- a(0) =34a(1) =67a(2) =67a(3) =215a(4) =174a(5) =215a(6) =499a(7) =653a(8) =653a(9) =499a(10) =936a(11) =1853a(12) =3511a(13) =1853a(14) =936a(15) =2212a(16) =4662a(17) =13373a(18) =13373a(19) =4662a(20) =2212a(21) =5352a(22) =13704a(23) =40435a(24) =58800a(25) =40435a(26) =13704a(27) =5352a(28) =11529a(29) =40955
External references
- oeis: A259894