2-boustrophedon transform (see A059294) of 1, 1, 1, 1, ...

A059295

2-boustrophedon transform (see A059294) of 1, 1, 1, 1, ...

Terms

    a(0) =1a(1) =2a(2) =5a(3) =16a(4) =69a(5) =386a(6) =2665a(7) =21856a(8) =207369a(9) =2233346a(10) =26910637a(11) =358654640a(12) =5238083085a(13) =83187634306

External references