Number of different strings of length n+6 obtained from "123...n" by iteratively duplicating any substring.

A137739

Number of different strings of length n+6 obtained from "123...n" by iteratively duplicating any substring.

Terms

    a(0) =1a(1) =64a(2) =355a(3) =1014a(4) =2218a(5) =4217a(6) =7343a(7) =12018a(8) =18767a(9) =28233a(10) =41193a(11) =58575a(12) =81476a(13) =111181a(14) =149183a(15) =197204a(16) =257217a(17) =331469a(18) =422505a(19) =533193a(20) =666750a(21) =826769a(22) =1017247a(23) =1242614a(24) =1507763a(25) =1818081a(26) =2179481a(27) =2598435a(28) =3082008a(29) =3637893

External references