Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111.

A260067

Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111.

Terms

    a(0) =956a(1) =2367a(2) =6714a(3) =12664a(4) =25444a(5) =77061a(6) =185370a(7) =361576a(8) =898184a(9) =2496222a(10) =5552698a(11) =11952765a(12) =31341494a(13) =80022569a(14) =176929366a(15) =411276097a(16) =1064191962a(17) =2586703244a(18) =5858122594a(19) =14132261009a(20) =35603181364a(21) =84838933138a(22) =197147800646

External references