Number of (n+2)X(3+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101.
A259767
Number of (n+2)X(3+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101.
Terms
- a(0) =104a(1) =167a(2) =256a(3) =385a(4) =612a(5) =1108a(6) =1708a(7) =2700a(8) =4660a(9) =7378a(10) =11350a(11) =19232a(12) =31280a(13) =48032a(14) =80218a(15) =131336a(16) =202926a(17) =335260a(18) =550228a(19) =857598a(20) =1403502a(21) =2304624a(22) =3618252a(23) =5883582a(24) =9653232a(25) =15248198a(26) =24687220a(27) =40439420a(28) =64203790a(29) =103643474
External references
- oeis: A259767