A mean binomial transform of the central binomial numbers.

Terms

a(0) =1a(1) =2a(2) =7a(3) =26a(4) =107a(5) =462a(6) =2065a(7) =9438a(8) =43811a(9) =205622a(10) =972917a(11) =4631838a(12) =22157525a(13) =106406978a(14) =512629551a(15) =2476289106a(16) =11989326771a(17) =58163714118a(18) =282662269717