Number of length n+2 0..7 arrays with some pair in every consecutive three terms totalling exactly 7.
A245868
Number of length n+2 0..7 arrays with some pair in every consecutive three terms totalling exactly 7.
Terms
- a(0) =168a(1) =712a(2) =2368a(3) =8840a(4) =31176a(5) =113024a(6) =404264a(7) =1455496a(8) =5223552a(9) =18775816a(10) =67437448a(11) =242306240a(12) =870461352a(13) =3127322696a(14) =11235107264a(15) =40363689352a(16) =145010699592a(17) =520968428032
External references
- oeis: A245868