Sum{T(n-k,k)}, 0<=k<=[ n/2 ], T given by A026714.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =7a(5) =13a(6) =23a(7) =42a(8) =77a(9) =132a(10) =241a(11) =438a(12) =742a(13) =1348a(14) =2435a(15) =4102a(16) =7418a(17) =13341a(18) =22406a(19) =40372a(20) =72374a(21) =121329a(22) =218010a(23) =389884a(24) =652835a(25) =1170571a(26) =2089623a(27) =3496107a(28) =6258591a(29) =11156898