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.

A256694 The radius of the largest of four circles with different integer radii arranged so that each circle is tangent externally to the other three circles.

Table of values

n a(n)
1 69
2 70
3 132
4 138
5 140
6 153
7 198
8 207
9 210
10 216
11 238
12 252
13 264
14 264
15 264
16 270
17 276
18 280
19 285
20 290
21 306
22 345
23 350
24 390
25 396
26 396
27 414
28 420
29 429
30 432
31 459
32 476
33 483
34 490
35 504
36 504
37 520
38 528
39 528
40 528
41 539
42 540
43 552
44 560
45 567
46 570
47 580
48 594
49 595
50 612
51 621
52 630

List of values

[69, 70, 132, 138, 140, 153, 198, 207, 210, 216, 238, 252, 264, 264, 264, 270, 276, 280, 285, 290, 306, 345, 350, 390, 396, 396, 414, 420, 429, 432, 459, 476, 483, 490, 504, 504, 520, 528, 528, 528, 539, 540, 552, 560, 567, 570, 580, 594, 595, 612, 621, 630]

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

Content is available under The OEIS End-User License Agreement.