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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.

A369487 Expansion of (1/x) * Series_Reversion( x / (1-x) * (1-x-x^2)^3 ).

Table of values

n a(n)
0 1
1 2
2 10
3 57
4 365
5 2492
6 17797
7 131290
8 992704
9 7652558
10 59918667
11 475213662
12 3809620760
13 30820493162
14 251309225465
15 2063207320841
16 17040385542611
17 141487339935740
18 1180337222858348
19 9888553030497869
20 83160409524964381
21 701782096849536054

List of values

[1, 2, 10, 57, 365, 2492, 17797, 131290, 992704, 7652558, 59918667, 475213662, 3809620760, 30820493162, 251309225465, 2063207320841, 17040385542611, 141487339935740, 1180337222858348, 9888553030497869, 83160409524964381, 701782096849536054]

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

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