Number of distinct sums <= 1 of distinct reciprocals of integers <= n.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =8a(5) =14a(6) =21a(7) =38a(8) =70a(9) =129a(10) =238a(11) =440a(12) =504a(13) =949a(14) =1790a(15) =2301a(16) =4363a(17) =8272a(18) =12408a(19) =23604a(20) =26675a(21) =45724a(22) =87781a(23) =168549a(24) =181989a(25) =351076a(26) =677339a(27) =1306894a(28) =1399054a(29) =2709128