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.

A260588 Number of prime factors, counted with multiplicity, of A173426(n) = concatenation of (1, 2, ..., n, n-1, ..., 1).

Table of values

n a(n)
1 0
2 2
3 4
4 4
5 4
6 10
7 4
8 8
9 8
10 1
11 2
12 5
13 3
14 6
15 7
16 4
17 5
18 8
19 6
20 2
21 6
22 3
23 4
24 9
25 2
26 6
27 11
28 2
29 4
30 10
31 4
32 9
33 8
34 6
35 6
36 12
37 3
38 6
39 8
40 4
41 6
42 7
43 3
44 6

List of values

[0, 2, 4, 4, 4, 10, 4, 8, 8, 1, 2, 5, 3, 6, 7, 4, 5, 8, 6, 2, 6, 3, 4, 9, 2, 6, 11, 2, 4, 10, 4, 9, 8, 6, 6, 12, 3, 6, 8, 4, 6, 7, 3, 6]