Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010011.

A260764

Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010011.

Terms

    a(0) =622a(1) =798a(2) =1740a(3) =3328a(4) =5256a(5) =11107a(6) =21594a(7) =38145a(8) =75910a(9) =151311a(10) =277024a(11) =537113a(12) =1075738a(13) =2023097a(14) =3857052a(15) =7670235a(16) =14713782a(17) =27930232a(18) =54856034a(19) =106455351a(20) =202705858a(21) =393933976a(22) =767509612a(23) =1470108705a(24) =2838509248a(25) =5526521856

External references