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.

A339026 Number of pairs (x,y): 1 <= x < y <= n*n, such that x*y is a square.

Table of values

n a(n)
1 0
2 1
3 4
4 8
5 16
6 27
7 40
8 58
9 80
10 105
11 128
12 158
13 198
14 237
15 278
16 336
17 382
18 435
19 502
20 574
21 632
22 699
23 798
24 868
25 968
26 1063
27 1176
28 1262
29 1362
30 1505
31 1590
32 1732
33 1880
34 2007
35 2150
36 2272
37 2434
38 2567
39 2746
40 2930
41 3062
42 3265
43 3444
44 3654
45 3832
46 4035
47 4284
48 4454
49 4668
50 4875
51 5142
52 5364
53 5590
54 5889
55 6078
56 6336
57 6614
58 6881
59 7166

List of values

[0, 1, 4, 8, 16, 27, 40, 58, 80, 105, 128, 158, 198, 237, 278, 336, 382, 435, 502, 574, 632, 699, 798, 868, 968, 1063, 1176, 1262, 1362, 1505, 1590, 1732, 1880, 2007, 2150, 2272, 2434, 2567, 2746, 2930, 3062, 3265, 3444, 3654, 3832, 4035, 4284, 4454, 4668, 4875, 5142, 5364, 5590, 5889, 6078, 6336, 6614, 6881, 7166]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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