Number of n-length words on {0,1,2,3,4,5,6} in which 0 appears only in runs of length 2.

A255119

Number of n-length words on {0,1,2,3,4,5,6} in which 0 appears only in runs of length 2.

Terms

    a(0) =1a(1) =6a(2) =37a(3) =228a(4) =1404a(5) =8646a(6) =53244a(7) =327888a(8) =2019204a(9) =12434688a(10) =76575456a(11) =471567960a(12) =2904015888a(13) =17883548064a(14) =110130696144a(15) =678208272192

External references