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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.

A380787 Odd positive integers k whose continued fraction for sqrt(k) has a central term equal to either floor(sqrt(k)) or floor(sqrt(k)) - 1.

Table of values

n a(n)
1 3
2 7
3 11
4 19
5 23
6 27
7 31
8 43
9 47
10 51
11 59
12 67
13 71
14 79
15 83
16 103
17 107
18 119
19 123
20 127
21 131
22 139
23 151
24 163
25 167
26 171
27 179
28 187
29 191
30 199
31 211
32 223
33 227
34 239
35 243
36 251
37 263
38 267
39 271
40 283
41 287
42 291
43 307
44 311
45 331
46 339
47 343
48 347
49 359
50 363
51 367
52 379
53 383
54 387
55 391

List of values

[3, 7, 11, 19, 23, 27, 31, 43, 47, 51, 59, 67, 71, 79, 83, 103, 107, 119, 123, 127, 131, 139, 151, 163, 167, 171, 179, 187, 191, 199, 211, 223, 227, 239, 243, 251, 263, 267, 271, 283, 287, 291, 307, 311, 331, 339, 343, 347, 359, 363, 367, 379, 383, 387, 391]

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

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