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.

A247517 Card{(x,y,z,t,u): 1<=x,y,z,t,u<=n, gcd(x,y,z,t,u)=1, lcm(x,y,z,t,u)=n}.

Table of values

n a(n)
1 1
2 30
3 30
4 180
5 30
6 900
7 30
8 570
9 180
10 900
11 30
12 5400
13 30
14 900
15 900
16 1320
17 30
18 5400
19 30
20 5400
21 900
22 900
23 30
24 17100
25 180
26 900
27 570
28 5400
29 30
30 27000
31 30
32 2550
33 900
34 900
35 900
36 32400
37 30
38 900
39 900
40 17100
41 30
42 27000
43 30
44 5400
45 5400
46 900
47 30
48 39600
49 180
50 5400
51 900

List of values

[1, 30, 30, 180, 30, 900, 30, 570, 180, 900, 30, 5400, 30, 900, 900, 1320, 30, 5400, 30, 5400, 900, 900, 30, 17100, 180, 900, 570, 5400, 30, 27000, 30, 2550, 900, 900, 900, 32400, 30, 900, 900, 17100, 30, 27000, 30, 5400, 5400, 900, 30, 39600, 180, 5400, 900]