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.

A191131 Increasing sequence generated by these rules: a(1)=1, and if x is in a then 3x and 4x+3 are in a.

Table of values

n a(n)
1 1
2 3
3 7
4 9
5 15
6 21
7 27
8 31
9 39
10 45
11 63
12 81
13 87
14 93
15 111
16 117
17 127
18 135
19 159
20 183
21 189
22 243
23 255
24 261
25 279
26 327
27 333
28 351
29 375
30 381
31 405
32 447
33 471
34 477
35 511
36 543
37 549
38 567
39 639
40 729
41 735
42 759
43 765
44 783
45 837
46 975
47 981
48 999
49 1023
50 1047
51 1053
52 1119
53 1125
54 1143
55 1215
56 1311
57 1335
58 1341
59 1407
60 1413
61 1431
62 1503
63 1527
64 1533
65 1623

List of values

[1, 3, 7, 9, 15, 21, 27, 31, 39, 45, 63, 81, 87, 93, 111, 117, 127, 135, 159, 183, 189, 243, 255, 261, 279, 327, 333, 351, 375, 381, 405, 447, 471, 477, 511, 543, 549, 567, 639, 729, 735, 759, 765, 783, 837, 975, 981, 999, 1023, 1047, 1053, 1119, 1125, 1143, 1215, 1311, 1335, 1341, 1407, 1413, 1431, 1503, 1527, 1533, 1623]

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

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