Number of morphically primitive words w in {1,2,3,...}^* of length n (modulo renaming), also the number of words (length n) which are fixed points of nontrivial morphisms, also the number of succinct patterns of length n in canonical form, also the number of words which have an unambiguous morphic image in {a,b}^*.
A131747
Number of morphically primitive words w in {1,2,3,...}^* of length n (modulo renaming), also the number of words (length n) which are fixed points of nontrivial morphisms, also the number of succinct patterns of length n in canonical form, also the number of words which have an unambiguous morphic image in {a,b}^*.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =11a(5) =32a(6) =152a(7) =625a(8) =3152a(9) =16154a(10) =90993a(11) =539181a(12) =3398803a(13) =22561791a(14) =157493522a(15) =1151863409a(16) =8803760900a(17) =70149141443a(18) =581461668973
External references
- oeis: A131747