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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.

A316224 a(n) = n*(2*n + 1)*(4*n + 1).

Table of values

n a(n)
0 0
1 15
2 90
3 273
4 612
5 1155
6 1950
7 3045
8 4488
9 6327
10 8610
11 11385
12 14700
13 18603
14 23142
15 28365
16 34320
17 41055
18 48618
19 57057
20 66420
21 76755
22 88110
23 100533
24 114072
25 128775
26 144690
27 161865
28 180348
29 200187
30 221430
31 244125
32 268320
33 294063
34 321402
35 350385
36 381060
37 413475
38 447678
39 483717

List of values

[0, 15, 90, 273, 612, 1155, 1950, 3045, 4488, 6327, 8610, 11385, 14700, 18603, 23142, 28365, 34320, 41055, 48618, 57057, 66420, 76755, 88110, 100533, 114072, 128775, 144690, 161865, 180348, 200187, 221430, 244125, 268320, 294063, 321402, 350385, 381060, 413475, 447678, 483717]

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

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