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.

A341362 a(n) begins the first sequence of n consecutive positive integers with the same h-value and the same d-value in the Collatz (or '3x + 1') problem.

Table of values

n a(n)
1 1
2 54
3 108
4 290
5 290
6 386
7 172146
8 298200
9 596400
10 596400
11 596400
12 795201
13 795201
14 2849196
15 2849196
16 8965036
17 33659819
18 45529226
19 52417676
20 93186987
21 104161282
22 104161282
23 104161282
24 436089218
25 436089218
26 605581697
27 934358530
28 934358530
29 934358530
30 3826876112

List of values

[1, 54, 108, 290, 290, 386, 172146, 298200, 596400, 596400, 596400, 795201, 795201, 2849196, 2849196, 8965036, 33659819, 45529226, 52417676, 93186987, 104161282, 104161282, 104161282, 436089218, 436089218, 605581697, 934358530, 934358530, 934358530, 3826876112]

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

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