T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010101 or 01010101.
A260015
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010101 or 01010101.
Terms
- a(0) =36a(1) =49a(2) =49a(3) =109a(4) =98a(5) =109a(6) =209a(7) =252a(8) =252a(9) =209a(10) =436a(11) =578a(12) =889a(13) =578a(14) =436a(15) =828a(16) =1232a(17) =2492a(18) =2492a(19) =1232a(20) =828a(21) =1744a(22) =2738a(23) =6944a(24) =8450a(25) =6944a(26) =2738a(27) =1744a(28) =3344a(29) =6262
External references
- oeis: A260015