Lengths of successive words (starting with a) under the substitution: {a -> aab, b -> aac, c -> b}.

A101197

Lengths of successive words (starting with a) under the substitution: {a -> aab, b -> aac, c -> b}.

Terms

    a(0) =1a(1) =3a(2) =9a(3) =25a(4) =71a(5) =199a(6) =561a(7) =1577a(8) =4439a(9) =12487a(10) =35137a(11) =98857a(12) =278151a(13) =782599a(14) =2201937a(15) =6195369a(16) =17431351a(17) =49044935a(18) =137993185a(19) =388258473a(20) =1092406631a(21) =3073602311a(22) =8647907569a(23) =24331808809a(24) =68460135703a(25) =192619882695

External references