T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000101.
A260001
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000101.
Terms
- a(0) =48a(1) =99a(2) =99a(3) =284a(4) =269a(5) =284a(6) =641a(7) =805a(8) =805a(9) =641a(10) =1228a(11) =1819a(12) =2532a(13) =1819a(14) =1228a(15) =2943a(16) =4383a(17) =6157a(18) =6157a(19) =4383a(20) =2943a(21) =7284a(22) =12412a(23) =13562a(24) =12620a(25) =13562a(26) =12412a(27) =7284a(28) =15683a(29) =32525
External references
- oeis: A260001