1/12 the number of (n+2)X6 0..2 arrays with each 3X3 subblock containing one of one value, three of another, and five of the last.

A184502

1/12 the number of (n+2)X6 0..2 arrays with each 3X3 subblock containing one of one value, three of another, and five of the last.

Terms

    a(0) =30024a(1) =66822a(2) =161097a(3) =425814a(4) =1315452a(5) =4331259a(6) =15153995a(7) =58565527a(8) =233542628a(9) =958384599a(10) =4189460597a(11) =18476576859a(12) =82379095826a(13) =383160981423

External references