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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.

A077828 Expansion of 1/(1-3*x-3*x^2-3*x^3).

Table of values

n a(n)
0 1
1 3
2 12
3 48
4 189
5 747
6 2952
7 11664
8 46089
9 182115
10 719604
11 2843424
12 11235429
13 44395371
14 175422672
15 693160416
16 2738935377
17 10822555395
18 42763953564
19 168976333008
20 667688525901
21 2638286437419
22 10424853888984
23 41192486556912
24 162766880649945
25 643152663287523

List of values

[1, 3, 12, 48, 189, 747, 2952, 11664, 46089, 182115, 719604, 2843424, 11235429, 44395371, 175422672, 693160416, 2738935377, 10822555395, 42763953564, 168976333008, 667688525901, 2638286437419, 10424853888984, 41192486556912, 162766880649945, 643152663287523]

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

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