a(n) = Sum_{i=0..n} A047080(i,n-i).

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =4a(5) =6a(6) =9a(7) =14a(8) =21a(9) =33a(10) =50a(11) =77a(12) =118a(13) =181a(14) =278a(15) =426a(16) =654a(17) =1003a(18) =1539a(19) =2361a(20) =3622a(21) =5557a(22) =8525a(23) =13079a(24) =20065a(25) =30783a(26) =47226a(27) =72452a(28) =111153a(29) =170526