Number of length n+6 0..2 arrays with at most one downstep in every 6 consecutive neighbor pairs.

A255105

Number of length n+6 0..2 arrays with at most one downstep in every 6 consecutive neighbor pairs.

Terms

    a(0) =540a(1) =1008a(2) =2032a(3) =4338a(4) =9297a(5) =19263a(6) =38010a(7) =73278a(8) =143045a(9) =288057a(10) =594045a(11) =1228136a(12) =2495244a(13) =4970793a(14) =9823140a(15) =19533636a(16) =39362880a(17) =80112560a(18) =163010352a(19) =329127561a(20) =659192991a(21) =1316427636a(22) =2637095196a(23) =5313657069a(24) =10747592751a(25) =21727946097

External references