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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.

A381109 a(n) = (21*n^2 + 9*n + 2)/2.

Table of values

n a(n)
0 1
1 16
2 52
3 109
4 187
5 286
6 406
7 547
8 709
9 892
10 1096
11 1321
12 1567
13 1834
14 2122
15 2431
16 2761
17 3112
18 3484
19 3877
20 4291
21 4726
22 5182
23 5659
24 6157
25 6676
26 7216
27 7777
28 8359
29 8962
30 9586
31 10231
32 10897
33 11584
34 12292
35 13021
36 13771
37 14542
38 15334
39 16147
40 16981
41 17836
42 18712

List of values

[1, 16, 52, 109, 187, 286, 406, 547, 709, 892, 1096, 1321, 1567, 1834, 2122, 2431, 2761, 3112, 3484, 3877, 4291, 4726, 5182, 5659, 6157, 6676, 7216, 7777, 8359, 8962, 9586, 10231, 10897, 11584, 12292, 13021, 13771, 14542, 15334, 16147, 16981, 17836, 18712]

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

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