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.

A133425 Analog of A006684 for the 7x+1 problem (cf. A133421).

Table of values

n a(n)
1 1
2 7
3 11
4 19
5 31
6 43
7 163
8 283
9 403
10 1111
11 1123
12 1243
13 1303
14 1549
15 1963
16 4123
17 9643
18 10003
19 11539
20 21431
21 76963
22 97031
23 468109
24 1351963
25 4553323
26 4778471
27 5163139
28 6563551
29 7618843
30 45214123
31 65704243
32 161738803
33 202903723

List of values

[1, 7, 11, 19, 31, 43, 163, 283, 403, 1111, 1123, 1243, 1303, 1549, 1963, 4123, 9643, 10003, 11539, 21431, 76963, 97031, 468109, 1351963, 4553323, 4778471, 5163139, 6563551, 7618843, 45214123, 65704243, 161738803, 202903723]