Number of (n+3)X7 0..2 arrays with every 4X4 subblock commuting with each horizontal and vertical neighbor 4X4 subblock.

A186584

Number of (n+3)X7 0..2 arrays with every 4X4 subblock commuting with each horizontal and vertical neighbor 4X4 subblock.

Terms

    a(0) =192026a(1) =12263a(2) =39757a(3) =163723a(4) =293665a(5) =328891a(6) =335737a(7) =342691a(8) =350257a(9) =364195a(10) =406729a(11) =574195a(12) =1025233a(13) =1707435a(14) =2460521a(15) =3477379a(16) =5076513a(17) =7165851a(18) =9482025a(19) =12660675a(20) =17905953a(21) =25496043a(22) =35045977a(23) =48354579a(24) =68994705a(25) =98503131

External references