cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A226161 Least positive integer k such that 1 + 1/2 + ... + 1/k > n/2.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 7
6 11
7 19
8 31
9 51
10 83
11 137
12 227
13 373
14 616
15 1015
16 1674
17 2759
18 4550
19 7501
20 12367
21 20390
22 33617
23 55425
24 91380
25 150661
26 248397
27 409538
28 675214
29 1113239
30 1835421
31 3026097
32 4989191
33 8225785
34 13562027
35 22360003
36 36865412
37 60780790
38 100210581
39 165219316

List of values

[1, 2, 3, 4, 7, 11, 19, 31, 51, 83, 137, 227, 373, 616, 1015, 1674, 2759, 4550, 7501, 12367, 20390, 33617, 55425, 91380, 150661, 248397, 409538, 675214, 1113239, 1835421, 3026097, 4989191, 8225785, 13562027, 22360003, 36865412, 60780790, 100210581, 165219316]