Number of (n+1)X7 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.

A206204

Number of (n+1)X7 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.

Terms

    a(0) =117084a(1) =67968a(2) =60800a(3) =109720a(4) =236488a(5) =484704a(6) =1080648a(7) =2383520a(8) =5023520a(9) =11272288a(10) =24906080a(11) =51970688a(12) =113273344a(13) =249152672a(14) =519714752a(15) =1132733728a(16) =2491526720a(17) =5197147520a(18) =11327337280a(19) =24915267200a(20) =51971475200a(21) =113273372800

External references