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.

A114618 Numbers k such that the k-th octagonal number is 4-almost prime.

Table of values

n a(n)
1 4
2 9
3 27
4 39
5 49
6 57
7 59
8 69
9 75
10 85
11 87
12 105
13 109
14 117
15 119
16 121
17 125
18 143
19 147
20 153
21 161
22 169
23 175
24 177
25 185
26 187
27 199
28 207
29 217
30 219
31 231
32 235
33 239
34 245
35 249
36 265
37 267
38 269
39 275
40 283
41 285
42 289
43 291
44 299
45 301
46 305
47 311
48 319
49 321
50 327
51 329
52 333
53 335
54 345
55 349
56 357
57 359
58 361
59 363
60 371
61 381
62 385

List of values

[4, 9, 27, 39, 49, 57, 59, 69, 75, 85, 87, 105, 109, 117, 119, 121, 125, 143, 147, 153, 161, 169, 175, 177, 185, 187, 199, 207, 217, 219, 231, 235, 239, 245, 249, 265, 267, 269, 275, 283, 285, 289, 291, 299, 301, 305, 311, 319, 321, 327, 329, 333, 335, 345, 349, 357, 359, 361, 363, 371, 381, 385]

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

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