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.

A308477 Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = Sum_{j=1..n, gcd(n,j) = 1} j^k.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 2
7 1
8 1
9 3
10 2
11 1
12 1
13 5
14 4
15 4
16 1
17 1
18 9
19 10
20 10
21 2
22 1
23 1
24 17
25 28
26 30
27 6
28 6
29 1
30 1
31 33
32 82
33 100
34 26
35 21
36 4
37 1
38 1
39 65
40 244
41 354
42 126
43 91
44 16
45 6
46 1
47 1
48 129
49 730
50 1300
51 626
52 441
53 84
54 27
55 4
56 1
57 1
58 257
59 2188
60 4890
61 3126
62 2275
63 496
64 159
65 20
66 10
67 1
68 1
69 513
70 6562
71 18700
72 15626
73 12201
74 3108
75 1053
76 140
77 55
78 4

List of values

[1, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 5, 4, 4, 1, 1, 9, 10, 10, 2, 1, 1, 17, 28, 30, 6, 6, 1, 1, 33, 82, 100, 26, 21, 4, 1, 1, 65, 244, 354, 126, 91, 16, 6, 1, 1, 129, 730, 1300, 626, 441, 84, 27, 4, 1, 1, 257, 2188, 4890, 3126, 2275, 496, 159, 20, 10, 1, 1, 513, 6562, 18700, 15626, 12201, 3108, 1053, 140, 55, 4]