T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001011.
A260501
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001011.
Terms
- a(0) =48a(1) =83a(2) =83a(3) =218a(4) =136a(5) =218a(6) =464a(7) =347a(8) =347a(9) =464a(10) =722a(11) =683a(12) =868a(13) =683a(14) =722a(15) =1600a(16) =942a(17) =1756a(18) =1756a(19) =942a(20) =1600a(21) =3446a(22) =2115a(23) =2420a(24) =3603a(25) =2420a(26) =2115a(27) =3446a(28) =6277a(29) =4393
External references
- oeis: A260501