Binomial transform of A005563.

Terms

a(0) =0a(1) =3a(2) =14a(3) =48a(4) =144a(5) =400a(6) =1056a(7) =2688a(8) =6656a(9) =16128a(10) =38400a(11) =90112a(12) =208896a(13) =479232a(14) =1089536a(15) =2457600a(16) =5505024a(17) =12255232a(18) =27131904a(19) =59768832a(20) =131072000a(21) =286261248a(22) =622854144a(23) =1350565888a(24) =2919235584a(25) =6291456000a(26) =13522436096