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

A101169

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

Terms

    a(0) =1a(1) =3a(2) =9a(3) =26a(4) =76a(5) =221a(6) =644a(7) =1875a(8) =5461a(9) =15903a(10) =46314a(11) =134876a(12) =392791a(13) =1143896a(14) =3331289a(15) =9701475a(16) =28252921a(17) =82278978a(18) =239615244a(19) =697814501a(20) =2032195756a(21) =5918219771a(22) =17235212309a(23) =50192888175a(24) =146173193506a(25) =425689839228

External references