Binomial transform of A002487.

Terms

a(0) =1a(1) =3a(2) =6a(3) =13a(4) =29a(5) =64a(6) =137a(7) =285a(8) =584a(9) =1197a(10) =2479a(11) =5198a(12) =10989a(13) =23275a(14) =49122a(15) =102951a(16) =213915a(17) =440478a(18) =899177a(19) =1821577a(20) =3668080a(21) =7358199a(22) =14742653a(23) =29582240a(24) =59593613a(25) =120742119a(26) =246254254a(27) =505494077a(28) =1043327165a(29) =2161750892