Boustrophedon transform of Catalan numbers.

Terms

a(0) =1a(1) =2a(2) =5a(3) =16a(4) =59a(5) =243a(6) =1101a(7) =5461a(8) =29619a(9) =175641a(10) =1137741a(11) =8031838a(12) =61569345a(13) =510230087a(14) =4549650423a(15) =43452408496a(16) =442620720531