a(n) = Sum_{i=0..n} A047060(i,n-i).

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =9a(5) =16a(6) =30a(7) =57a(8) =114a(9) =200a(10) =388a(11) =753a(12) =1476a(13) =2867a(14) =5635a(15) =11097a(16) =22194a(17) =42484a(18) =84007a(19) =166048a(20) =329444a(21) =650843a(22) =1291996a(23) =2566355a(24) =5132710a(25) =10061288a(26) =20013626a(27) =39798674a(28) =79284893a(29) =157593796