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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.

A261309 a(n+1) = abs(a(n) - gcd(a(n), 9n+8)), u(1) = 1.

Table of values

n a(n)
1 1
2 0
3 26
4 25
5 24
6 23
7 22
8 21
9 20
10 19
11 18
12 17
13 16
14 15
15 14
16 13
17 12
18 11
19 10
20 9
21 8
22 7
23 6
24 5
25 4
26 3
27 2
28 1
29 0
30 269
31 268
32 267
33 266
34 265
35 264
36 263
37 262
38 261
39 260
40 259
41 258
42 257
43 256
44 255
45 254
46 253
47 252
48 251
49 250
50 249
51 248
52 247
53 246
54 245
55 244
56 243
57 242
58 241
59 240
60 239
61 238
62 237
63 236
64 235
65 234
66 233
67 232
68 231

List of values

[1, 0, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 269, 268, 267, 266, 265, 264, 263, 262, 261, 260, 259, 258, 257, 256, 255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 245, 244, 243, 242, 241, 240, 239, 238, 237, 236, 235, 234, 233, 232, 231]

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

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