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.

A338857 With S(n,k) = Sum_{n<=j<=k} 1/(2*j+1), a(n)=k+1 such that S(n,k-1) < 1 <= S(n,k) for n>=0 and a(0)=1.

Table of values

n a(n)
0 1
1 8
2 15
3 23
4 30
5 38
6 45
7 52
8 60
9 67
10 74
11 82
12 89
13 97
14 104
15 111
16 119
17 126
18 134
19 141
20 148
21 156
22 163
23 170
24 178
25 185
26 193
27 200
28 207
29 215
30 222
31 230
32 237
33 244
34 252
35 259
36 267
37 274
38 281
39 289
40 296
41 303
42 311
43 318
44 326
45 333
46 340
47 348
48 355
49 363
50 370
51 377
52 385
53 392
54 400
55 407
56 414

List of values

[1, 8, 15, 23, 30, 38, 45, 52, 60, 67, 74, 82, 89, 97, 104, 111, 119, 126, 134, 141, 148, 156, 163, 170, 178, 185, 193, 200, 207, 215, 222, 230, 237, 244, 252, 259, 267, 274, 281, 289, 296, 303, 311, 318, 326, 333, 340, 348, 355, 363, 370, 377, 385, 392, 400, 407, 414]