Binomial transform(2) of Catalan numbers.

Terms

a(0) =1a(1) =3a(2) =11a(3) =43a(4) =174a(5) =721a(6) =3044a(7) =13059a(8) =56837a(9) =250690a(10) =1119612a(11) =5059561a(12) =23119628a(13) =106753404a(14) =497762380a(15) =2342096579a(16) =11113027686a(17) =53138757319a(18) =255892224332