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.

A344726 Square array T(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where T(n,k) = Sum_{j=1..n} (-1)^(j+1) * floor(n/j)^k.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 3
6 3
7 1
8 7
9 9
10 2
11 1
12 15
13 27
14 12
15 4
16 1
17 31
18 81
19 56
20 22
21 4
22 1
23 63
24 243
25 240
26 118
27 30
28 6
29 1
30 127
31 729
32 992
33 610
34 196
35 44
36 4
37 1
38 255
39 2187
40 4032
41 3094
42 1230
43 324
44 48
45 7
46 1
47 511
48 6561
49 16256
50 15562
51 7564
52 2336
53 448
54 71
55 7
56 1
57 1023
58 19683
59 65280
60 77998
61 45990
62 16596
63 3840
64 685
65 83
66 9

List of values

[1, 1, 1, 1, 3, 3, 1, 7, 9, 2, 1, 15, 27, 12, 4, 1, 31, 81, 56, 22, 4, 1, 63, 243, 240, 118, 30, 6, 1, 127, 729, 992, 610, 196, 44, 4, 1, 255, 2187, 4032, 3094, 1230, 324, 48, 7, 1, 511, 6561, 16256, 15562, 7564, 2336, 448, 71, 7, 1, 1023, 19683, 65280, 77998, 45990, 16596, 3840, 685, 83, 9]