Number of (n+1) X 7 0..3 arrays with every 2 X 2 subblock summing to 6.

A183639

Number of (n+1) X 7 0..3 arrays with every 2 X 2 subblock summing to 6.

Terms

    a(0) =21016a(1) =31060a(2) =53512a(3) =105604a(4) =231736a(5) =551380a(6) =1398952a(7) =3743524a(8) =10479256a(9) =30483700a(10) =91664392a(11) =283832644a(12) =902755576a(13) =2945024020a(14) =9845481832a(15) =33704772964a(16) =118040932696a(17) =422335788340

External references