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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.

A140681 a(n) = 3*n*(n+6).

Table of values

n a(n)
0 0
1 21
2 48
3 81
4 120
5 165
6 216
7 273
8 336
9 405
10 480
11 561
12 648
13 741
14 840
15 945
16 1056
17 1173
18 1296
19 1425
20 1560
21 1701
22 1848
23 2001
24 2160
25 2325
26 2496
27 2673
28 2856
29 3045
30 3240
31 3441
32 3648
33 3861
34 4080
35 4305
36 4536
37 4773
38 5016
39 5265
40 5520
41 5781

List of values

[0, 21, 48, 81, 120, 165, 216, 273, 336, 405, 480, 561, 648, 741, 840, 945, 1056, 1173, 1296, 1425, 1560, 1701, 1848, 2001, 2160, 2325, 2496, 2673, 2856, 3045, 3240, 3441, 3648, 3861, 4080, 4305, 4536, 4773, 5016, 5265, 5520, 5781]

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

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