Binomial transform of A029767.

Terms

a(0) =1a(1) =4a(2) =21a(3) =142a(4) =1201a(5) =12336a(6) =149989a(7) =2113546a(8) =33926337a(9) =611660476a(10) =12243073621a(11) =269456124774