Number of length n+4 0..3 arrays with at most one downstep in every n consecutive neighbor pairs.

A258734

Number of length n+4 0..3 arrays with at most one downstep in every n consecutive neighbor pairs.

Terms

    a(0) =1024a(1) =3136a(2) =6552a(3) =12549a(4) =21860a(5) =35704a(6) =55660a(7) =83758a(8) =122584a(9) =175400a(10) =246280a(11) =340263a(12) =463524a(13) =623564a(14) =829420a(15) =1091896a(16) =1423816a(17) =1840300a(18) =2359064a(19) =3000745a(20) =3789252a(21) =4752144a(22) =5921036a(23) =7332034a(24) =9026200a(25) =11050048a(26) =13456072a(27) =16303307

External references