Number of length n+3 0..4 arrays with some pair in every consecutive four terms totalling exactly 4.
A245946
Number of length n+3 0..4 arrays with some pair in every consecutive four terms totalling exactly 4.
Terms
- a(0) =453a(1) =1889a(2) =7769a(3) =31465a(4) =128649a(5) =525041a(6) =2141609a(7) =8740385a(8) =35666177a(9) =145538749a(10) =593901081a(11) =2423511809a(12) =9889552885a(13) =40356071813a(14) =164679993617a(15) =672005573917
External references
- oeis: A245946