Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001.
A260176
Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001.
Terms
- a(0) =5235a(1) =15847a(2) =46263a(3) =153286a(4) =572908a(5) =2136068a(6) =7542684a(7) =27290652a(8) =103230076a(9) =376084390a(10) =1384508646a(11) =5089292404a(12) =18950590232a(13) =69333670572a(14) =257144715114a(15) =945604043768
External references
- oeis: A260176