Number of length-n 0..2 arrays with no repeated value differing from the previous repeated value by one or less.

A269601

Number of length-n 0..2 arrays with no repeated value differing from the previous repeated value by one or less.

Terms

    a(0) =3a(1) =9a(2) =24a(3) =62a(4) =154a(5) =376a(6) =902a(7) =2142a(8) =5040a(9) =11786a(10) =27418a(11) =63544a(12) =146822a(13) =338478a(14) =778944a(15) =1790282a(16) =4110730a(17) =9432424a(18) =21633542a(19) =49603134a(20) =113717328a(21) =260691722a(22) =597649402a(23) =1370287384a(24) =3142264070a(25) =7206988878a(26) =16533117792a(27) =37935980618a(28) =87065571946

External references