Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00001011.

A261551

Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00001011.

Terms

    a(0) =336a(1) =484a(2) =754a(3) =769a(4) =816a(5) =1286a(6) =1510a(7) =1615a(8) =2362a(9) =3215a(10) =3431a(11) =4393a(12) =7048a(13) =7780a(14) =8410a(15) =13211a(16) =16608a(17) =17829a(18) =24668a(19) =36190a(20) =39242a(21) =46637a(22) =73624a(23) =86018a(24) =93335a(25) =138721a(26) =186633a(27) =201052a(28) =260339a(29) =393430

External references