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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.

A368976 Expansion of (1/x) * Series_Reversion( x * (1-x)^2 * (1-x+x^3)^2 ).

Table of values

n a(n)
0 1
1 4
2 26
3 202
4 1729
5 15730
6 149249
7 1460300
8 14627340
9 149254996
10 1545959720
11 16212144520
12 171789072036
13 1836515799464
14 19783708310984
15 214539449634588
16 2340148164406642
17 25658221358522584
18 282627226176802000
19 3126081536554547488
20 34706443838025828198

List of values

[1, 4, 26, 202, 1729, 15730, 149249, 1460300, 14627340, 149254996, 1545959720, 16212144520, 171789072036, 1836515799464, 19783708310984, 214539449634588, 2340148164406642, 25658221358522584, 282627226176802000, 3126081536554547488, 34706443838025828198]

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

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