Number of length n+6 0..3 arrays with at most two downsteps in every n consecutive neighbor pairs.

A255666

Number of length n+6 0..3 arrays with at most two downsteps in every n consecutive neighbor pairs.

Terms

    a(0) =16384a(1) =65536a(2) =256012a(3) =803246a(4) =2036844a(5) =4542671a(6) =9169016a(7) =17232696a(8) =30665992a(9) =52227111a(10) =85761364a(11) =136522338a(12) =211563872a(13) =320215410a(14) =474655320a(15) =690599060a(16) =988121664a(17) =1392636938a(18) =1936059024a(19) =2658175636a(20) =3608266324a(21) =4847003609

External references