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.

A363379 Numbers k such that the sum of the first k terms of A180405 is composite.

Table of values

n a(n)
1 5
2 9
3 13
4 17
5 21
6 25
7 27
8 33
9 41
10 47
11 55
12 61
13 65
14 69
15 75
16 83
17 89
18 95
19 105
20 107
21 113
22 119
23 125
24 128
25 133
26 139
27 145
28 155
29 161
30 165
31 171
32 179
33 183
34 189
35 197
36 201
37 207
38 211
39 217
40 225
41 231
42 237
43 241
44 247
45 255
46 261
47 267
48 271
49 279
50 285
51 289
52 297
53 303
54 307
55 313
56 319
57 327
58 333
59 339
60 343
61 351

List of values

[5, 9, 13, 17, 21, 25, 27, 33, 41, 47, 55, 61, 65, 69, 75, 83, 89, 95, 105, 107, 113, 119, 125, 128, 133, 139, 145, 155, 161, 165, 171, 179, 183, 189, 197, 201, 207, 211, 217, 225, 231, 237, 241, 247, 255, 261, 267, 271, 279, 285, 289, 297, 303, 307, 313, 319, 327, 333, 339, 343, 351]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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