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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.

A163506 a(n) = n-th odd nonprime * n-th odd number.

Table of values

n a(n)
1 1
2 27
3 75
4 147
5 225
6 297
7 429
8 525
9 663
10 855
11 1029
12 1173
13 1375
14 1539
15 1827
16 2015
17 2277
18 2625
19 2849
20 3159
21 3485
22 3741
23 4095
24 4371
25 4655
26 5049
27 5565
28 6105
29 6555
30 6903
31 7259
32 7623
33 7995
34 8375
35 8901
36 9443
37 9855
38 10575
39 11011
40 11455
41 11907
42 12699
43 13175
44 13833

List of values

[1, 27, 75, 147, 225, 297, 429, 525, 663, 855, 1029, 1173, 1375, 1539, 1827, 2015, 2277, 2625, 2849, 3159, 3485, 3741, 4095, 4371, 4655, 5049, 5565, 6105, 6555, 6903, 7259, 7623, 7995, 8375, 8901, 9443, 9855, 10575, 11011, 11455, 11907, 12699, 13175, 13833]

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

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