A227816 - cp's OEIS frontend

A227816 a(1) = greatest k such that H(k) - H(6) < H(6) - H(3); a(2) = greatest k such that H(k) - H(a(1)) < H(a(1)) - H(6), and for n > 2, a(n) = greatest k such that H(k) - H(a(n-1)) > H(a(n-1)) - H(a(n-2)), where H = harmonic number.

n	a(n)
1	16
2	41
3	103
4	257
5	640
6	1592
7	3958
8	9839
9	24457
10	60792
11	151107
12	375596
13	933591
14	2320556
15	5768028
16	14337143
17	35636731
18	88579473
19	220175161
20	547272407
21	1360312788
22	3381224518
23	8404448844
24	20890289891
25	51925381404
26	129066913288
27	320811665802
28	797416799492

[16, 41, 103, 257, 640, 1592, 3958, 9839, 24457, 60792, 151107, 375596, 933591, 2320556, 5768028, 14337143, 35636731, 88579473, 220175161, 547272407, 1360312788, 3381224518, 8404448844, 20890289891, 51925381404, 129066913288, 320811665802, 797416799492]

cp's OEIS Frontend

A227816 a(1) = greatest k such that H(k) - H(6) < H(6) - H(3); a(2) = greatest k such that H(k) - H(a(1)) < H(a(1)) - H(6), and for n > 2, a(n) = greatest k such that H(k) - H(a(n-1)) > H(a(n-1)) - H(a(n-2)), where H = harmonic number.

Table of values

List of values