Number of (n+1) X (2+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0001 0101 0111.
A259509
Number of (n+1) X (2+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0001 0101 0111.
Terms
- a(0) =31a(1) =129a(2) =533a(3) =2219a(4) =9227a(5) =38409a(6) =159845a(7) =665339a(8) =2769251a(9) =11526489a(10) =47976173a(11) =199690619a(12) =831166667a(13) =3459548649a(14) =14399597045a(15) =59935131419a(16) =249466635731
External references
- oeis: A259509