cp's OEIS Frontend

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.

A147518 Expansion of (1-x)/(1-4*x-6*x^2).

Table of values

n a(n)
0 1
1 3
2 18
3 90
4 468
5 2412
6 12456
7 64296
8 331920
9 1713456
10 8845344
11 45662112
12 235720512
13 1216854720
14 6281741952
15 32428096128
16 167402836224
17 864179921664
18 4461136704000
19 23029626345984
20 118885325607936
21 613719060507648

List of values

[1, 3, 18, 90, 468, 2412, 12456, 64296, 331920, 1713456, 8845344, 45662112, 235720512, 1216854720, 6281741952, 32428096128, 167402836224, 864179921664, 4461136704000, 23029626345984, 118885325607936, 613719060507648]

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

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