Number of length n+7 0..2 arrays with at most two downsteps in every 7 consecutive neighbor pairs.
A255621
Number of length n+7 0..2 arrays with at most two downsteps in every 7 consecutive neighbor pairs.
Terms
- a(0) =3834a(1) =9186a(2) =23298a(3) =60390a(4) =156563a(5) =405687a(6) =1047141a(7) =2656032a(8) =6682971a(9) =16925280a(10) =43249522a(11) =110788455a(12) =283416570a(13) =724728391a(14) =1851244551a(15) =4719321474a(16) =12020625692a(17) =30651759318a(18) =78266507064a(19) =199890070327a(20) =510335125536
External references
- oeis: A255621