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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.

A379083 Expansion of (1/x) * Series_Reversion( x * (1/(1 + x) - x^3)^3 ).

Table of values

n a(n)
0 1
1 3
2 12
3 58
4 321
5 1941
6 12405
7 82188
8 558567
9 3870694
10 27245268
11 194269872
12 1400352702
13 10187886330
14 74710928103
15 551676261727
16 4098401671788
17 30610414484517
18 229717037309281
19 1731295701244008
20 13098454442320593
21 99444838611953627
22 757393732018935552
23 5785220154325055826

List of values

[1, 3, 12, 58, 321, 1941, 12405, 82188, 558567, 3870694, 27245268, 194269872, 1400352702, 10187886330, 74710928103, 551676261727, 4098401671788, 30610414484517, 229717037309281, 1731295701244008, 13098454442320593, 99444838611953627, 757393732018935552, 5785220154325055826]

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

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