A simple grammar: sequences of pairs of cycles.

A052811

A simple grammar: sequences of pairs of cycles.

Terms

    a(0) =1a(1) =0a(2) =2a(3) =6a(4) =46a(5) =340a(6) =3308a(7) =36288a(8) =460752a(9) =6551424a(10) =103685232a(11) =1803956880a(12) =34247483664a(13) =704301934752

External references