Number of (n+2) X (4+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001001.

A259958

Number of (n+2) X (4+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001001.

Terms

    a(0) =353a(1) =1187a(2) =5449a(3) =22622a(4) =95505a(5) =410928a(6) =1749180a(7) =7428045a(8) =31652938a(9) =134864351a(10) =574177723a(11) =2444862662a(12) =10411688737a(13) =44337641182a(14) =188806035352a(15) =804008747575

External references