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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.

A369600 Expansion of (1/x) * Series_Reversion( x * (1/(1+x)^3 - x^3) ).

Table of values

n a(n)
0 1
1 3
2 12
3 56
4 291
5 1638
6 9780
7 60948
8 391821
9 2577575
10 17256918
11 117150228
12 804343302
13 5575177026
14 38957753136
15 274143594685
16 1941037464402
17 13818185220783
18 98848503602394
19 710185896393792
20 5122358166219855
21 37076879861508830
22 269235792063692580

List of values

[1, 3, 12, 56, 291, 1638, 9780, 60948, 391821, 2577575, 17256918, 117150228, 804343302, 5575177026, 38957753136, 274143594685, 1941037464402, 13818185220783, 98848503602394, 710185896393792, 5122358166219855, 37076879861508830, 269235792063692580]

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

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