Boustrophedon transform of Thue-Morse sequence A010060.

Terms

a(0) =0a(1) =1a(2) =3a(3) =6a(4) =15a(5) =50a(6) =186a(7) =834a(8) =4243a(9) =24318a(10) =154780a(11) =1083952a(12) =8280624a(13) =68531308a(14) =610796150a(15) =5832677415a(16) =59411150931a(17) =642979374958