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.

A380244 The Collatz (or 3x+1) trajectory starting at a(n) contains exactly n odd integers and a(n) is the n-th number with this property.

Table of values

n a(n)
1 1
2 10
3 12
4 68
5 45
6 30
7 72
8 101
9 134
10 179
11 237
12 314
13 422
14 551
15 723
16 509
17 1282
18 887
19 1170
20 1535
21 2021
22 1509
23 1899
24 2412
25 1780
26 2217
27 3170
28 3867
29 2819
30 3728
31 2511
32 3155
33 3972
34 2802
35 3578
36 2623
37 3444
38 4302
39 3087
40 3968
41 2690
42 1806
43 2336
44 1593
45 2084
46 2757
47 1884
48 2477

List of values

[1, 10, 12, 68, 45, 30, 72, 101, 134, 179, 237, 314, 422, 551, 723, 509, 1282, 887, 1170, 1535, 2021, 1509, 1899, 2412, 1780, 2217, 3170, 3867, 2819, 3728, 2511, 3155, 3972, 2802, 3578, 2623, 3444, 4302, 3087, 3968, 2690, 1806, 2336, 1593, 2084, 2757, 1884, 2477]