Number of (n+1) X (6+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0011 or 0101.

A259220

Number of (n+1) X (6+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0011 or 0101.

Terms

    a(0) =162a(1) =230a(2) =334a(3) =510a(4) =798a(5) =1278a(6) =2078a(7) =3422a(8) =5694a(9) =9566a(10) =16222a(11) =27774a(12) =48030a(13) =83934a(14) =148286a(15) =264926a(16) =478686a(17) =874622a(18) =1615390a(19) =3014238a(20) =5678142a(21) =10789470a(22) =20661854a(23) =39839870a(24) =77278878a(25) =150673118a(26) =295060798a(27) =579951582a(28) =1143447774a(29) =2260270206

External references