Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001011.
A260281
Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001011.
Terms
- a(0) =366a(1) =1150a(2) =5420a(3) =18380a(4) =65907a(5) =264502a(6) =984644a(7) =3594132a(8) =13692107a(9) =51665854a(10) =191960166a(11) =721121125a(12) =2715359102a(13) =10162545149a(14) =38093817256a(15) =143095709741a(16) =536645505853
External references
- oeis: A260281