Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010101 or 01010101.
A260012
Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010101 or 01010101.
Terms
- a(0) =436a(1) =1232a(2) =6944a(3) =25600a(4) =87024a(5) =294336a(6) =1231648a(7) =4380288a(8) =16773440a(9) =58243968a(10) =231701952a(11) =814232832a(12) =3185356416a(13) =11129195264a(14) =43863022976a(15) =153683692032a(16) =603684726016
External references
- oeis: A260012