Partial sums of odd Fibonacci numbers (A014437).

Terms

a(0) =1a(1) =2a(2) =5a(3) =10a(4) =23a(5) =44a(6) =99a(7) =188a(8) =421a(9) =798a(10) =1785a(11) =3382a(12) =7563a(13) =14328a(14) =32039a(15) =60696a(16) =135721a(17) =257114a(18) =574925a(19) =1089154a(20) =2435423a(21) =4613732a(22) =10316619a(23) =19544084a(24) =43701901a(25) =82790070a(26) =185124225a(27) =350704366a(28) =784198803a(29) =1485607536