Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010101.
A260098
Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010101.
Terms
- a(0) =48a(1) =201a(2) =1136a(3) =7119a(4) =47576a(5) =355098a(6) =2703084a(7) =23254546a(8) =207675396a(9) =2011569856a(10) =20907484556a(11) =232901842600
External references
- oeis: A260098