T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00000111.
A261709
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00000111.
Terms
- a(0) =48a(1) =76a(2) =76a(3) =172a(4) =134a(5) =172a(6) =338a(7) =270a(8) =270a(9) =338a(10) =628a(11) =462a(12) =468a(13) =462a(14) =628a(15) =1298a(16) =892a(17) =662a(18) =662a(19) =892a(20) =1298a(21) =2752a(22) =1751a(23) =1168a(24) =675a(25) =1168a(26) =1751a(27) =2752a(28) =5526a(29) =3299
External references
- oeis: A261709