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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.

A085696 a(n) = L(n) * L(n+1) * L(n+2) / 2, where L(n) = Lucas number (A000032).

Table of values

n a(n)
0 3
1 6
2 42
3 154
4 693
5 2871
6 12267
7 51794
8 219678
9 930126
10 3940797
11 16692319
12 70711683
13 299536446
14 1268861682
15 5374976354
16 22768778133
17 96450071031
18 408569091147
19 1730726388874
20 7331474722278
21 31056625155606
22 131557975542717
23 557288527006079
24 2360712084085443

List of values

[3, 6, 42, 154, 693, 2871, 12267, 51794, 219678, 930126, 3940797, 16692319, 70711683, 299536446, 1268861682, 5374976354, 22768778133, 96450071031, 408569091147, 1730726388874, 7331474722278, 31056625155606, 131557975542717, 557288527006079, 2360712084085443]

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

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