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.

A119973 Numbers of the form (4k+1)*2^j which are not a sum of two squares.

Table of values

n a(n)
1 21
2 33
3 42
4 57
5 66
6 69
7 77
8 84
9 93
10 105
11 114
12 129
13 132
14 133
15 138
16 141
17 154
18 161
19 165
20 168
21 177
22 186
23 189
24 201
25 209
26 210
27 213
28 217
29 228
30 237
31 249
32 253
33 258
34 264
35 266
36 273
37 276
38 282
39 285
40 297
41 301
42 308
43 309
44 321
45 322
46 329
47 330
48 336
49 341
50 345
51 354
52 357
53 372

List of values

[21, 33, 42, 57, 66, 69, 77, 84, 93, 105, 114, 129, 132, 133, 138, 141, 154, 161, 165, 168, 177, 186, 189, 201, 209, 210, 213, 217, 228, 237, 249, 253, 258, 264, 266, 273, 276, 282, 285, 297, 301, 308, 309, 321, 322, 329, 330, 336, 341, 345, 354, 357, 372]