Number of length n+2 0..5 arrays with some pair in every consecutive three terms totalling exactly 5.

A245866

Number of length n+2 0..5 arrays with some pair in every consecutive three terms totalling exactly 5.

Terms

    a(0) =90a(1) =318a(2) =960a(3) =3102a(4) =9726a(5) =30900a(6) =97602a(7) =309078a(8) =977664a(9) =3094038a(10) =9789654a(11) =30977796a(12) =98020170a(13) =310161870a(14) =981426624a(15) =3105480558a(16) =9826505742a(17) =31093507092a(18) =98387556594a(19) =311322635814a(20) =985101990912

External references