Binomial transform of A052551.

Terms

a(0) =1a(1) =2a(2) =6a(3) =16a(4) =42a(5) =108a(6) =274a(7) =688a(8) =1714a(9) =4244a(10) =10458a(11) =25672a(12) =62826a(13) =153372a(14) =373666a(15) =908896a(16) =2207842a(17) =5357348a(18) =12988074a(19) =31464568a(20) =76179354a(21) =184347564a(22) =445923058a(23) =1078290832a(24) =2606699026a(25) =6300077492a(26) =15223631226a(27) =36780894376a(28) =88852528842a(29) =214620169788