Number of length n+4+2 0..4 arrays with every value 0..4 appearing at least once in every consecutive 4+3 elements, and new values 0..4 introduced in order.
A242319
Number of length n+4+2 0..4 arrays with every value 0..4 appearing at least once in every consecutive 4+3 elements, and new values 0..4 introduced in order.
Terms
- a(0) =140a(1) =440a(2) =1300a(3) =3648a(4) =10012a(5) =27368a(6) =75236a(7) =208976a(8) =577964a(9) =1596216a(10) =4408020a(11) =12176768a(12) =33645500a(13) =92967176a(14) =256849892a(15) =709617776a(16) =1960543660a(17) =5416680632a(18) =14965468916a(19) =41347189280a(20) =114235439996a(21) =315613828040a(22) =871989852740
External references
- oeis: A242319