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.

A089632 1 + product of prime factors of n is a perfect square.

Table of values

n a(n)
1 3
2 9
3 15
4 27
5 35
6 45
7 75
8 81
9 135
10 143
11 175
12 195
13 225
14 243
15 245
16 255
17 323
18 375
19 399
20 405
21 483
22 585
23 675
24 729
25 765
26 875
27 899
28 975
29 1023
30 1125
31 1155
32 1197
33 1215
34 1225
35 1275
36 1295
37 1443
38 1449
39 1573
40 1599
41 1715
42 1755
43 1763
44 1859
45 1875
46 2025
47 2187
48 2295
49 2535

List of values

[3, 9, 15, 27, 35, 45, 75, 81, 135, 143, 175, 195, 225, 243, 245, 255, 323, 375, 399, 405, 483, 585, 675, 729, 765, 875, 899, 975, 1023, 1125, 1155, 1197, 1215, 1225, 1275, 1295, 1443, 1449, 1573, 1599, 1715, 1755, 1763, 1859, 1875, 2025, 2187, 2295, 2535]

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

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