Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00001001 or 00100101.

A260979

Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00001001 or 00100101.

Terms

    a(0) =6526a(1) =3683a(2) =4688a(3) =9728a(4) =14672a(5) =30418a(6) =45504a(7) =95248a(8) =145748a(9) =298612a(10) =459656a(11) =962406a(12) =1514880a(13) =3159306a(14) =4901140a(15) =10112892a(16) =15968776a(17) =33287288a(18) =52776144a(19) =108309796a(20) =172770868a(21) =355488952a(22) =570503876a(23) =1164669296a(24) =1880888992a(25) =3837475736

External references