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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.

A280341 Number of distinct heights achieved in the Collatz (or '3x+1') problem when starting from numbers in the range [2^n,2^(n+1)).

Table of values

n a(n)
0 1
1 2
2 4
3 6
4 10
5 16
6 26
7 41
8 53
9 64
10 74
11 85
12 101
13 118
14 128
15 144
16 157
17 174
18 195
19 217
20 238
21 261
22 281
23 309
24 324
25 342
26 364
27 397

List of values

[1, 2, 4, 6, 10, 16, 26, 41, 53, 64, 74, 85, 101, 118, 128, 144, 157, 174, 195, 217, 238, 261, 281, 309, 324, 342, 364, 397]

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

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