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.

A048131 Becomes prime or 4 after exactly 9 iterations of f(x) = sum of prime factors of x.

Table of values

n a(n)
1 4659
2 5294
3 5937
4 9286
5 10334
6 10843
7 15490
8 16382
9 17972
10 18201
11 18588
12 18735
13 19137
14 19984
15 20059
16 22482
17 23073
18 23806
19 25405
20 26405
21 26547
22 27622
23 27845
24 28694
25 28772
26 30062
27 30486
28 31686
29 32156
30 32313
31 33177
32 33238
33 33414
34 33944

List of values

[4659, 5294, 5937, 9286, 10334, 10843, 15490, 16382, 17972, 18201, 18588, 18735, 19137, 19984, 20059, 22482, 23073, 23806, 25405, 26405, 26547, 27622, 27845, 28694, 28772, 30062, 30486, 31686, 32156, 32313, 33177, 33238, 33414, 33944]