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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.

A063495 a(n) = (2*n-1)*(5*n^2-5*n+2)/2.

Table of values

n a(n)
1 1
2 18
3 80
4 217
5 459
6 836
7 1378
8 2115
9 3077
10 4294
11 5796
12 7613
13 9775
14 12312
15 15254
16 18631
17 22473
18 26810
19 31672
20 37089
21 43091
22 49708
23 56970
24 64907
25 73549
26 82926
27 93068
28 104005
29 115767
30 128384
31 141886
32 156303
33 171665
34 188002
35 205344
36 223721
37 243163
38 263700
39 285362

List of values

[1, 18, 80, 217, 459, 836, 1378, 2115, 3077, 4294, 5796, 7613, 9775, 12312, 15254, 18631, 22473, 26810, 31672, 37089, 43091, 49708, 56970, 64907, 73549, 82926, 93068, 104005, 115767, 128384, 141886, 156303, 171665, 188002, 205344, 223721, 243163, 263700, 285362]

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

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