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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.

A371416 Expansion of (1/x) * Series_Reversion( x * (1 - 3*x - x^3) ).

Table of values

n a(n)
0 1
1 3
2 18
3 136
4 1152
5 10458
6 99472
7 978453
8 9871686
9 101590654
10 1062271704
11 11253818628
12 120535386692
13 1303045817184
14 14199323523912
15 155805565801803
16 1720024043803542
17 19090440094335912
18 212897898182054224
19 2384431948345110510
20 26808516659219953680

List of values

[1, 3, 18, 136, 1152, 10458, 99472, 978453, 9871686, 101590654, 1062271704, 11253818628, 120535386692, 1303045817184, 14199323523912, 155805565801803, 1720024043803542, 19090440094335912, 212897898182054224, 2384431948345110510, 26808516659219953680]

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

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