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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.

A336538 G.f. A(x) satisfies A(x) = 1 + x * A(x)^3 * (2 + A(x)).

Table of values

n a(n)
0 1
1 3
2 30
3 408
4 6402
5 109137
6 1964010
7 36718680
8 706221210
9 13883562732
10 277730910840
11 5635185129696
12 115693119210270
13 2398955889524934
14 50167967688522012
15 1056869531313301200
16 22407983968252808586
17 477791976566108489700
18 10238908702033904618856
19 220401923906465000263200
20 4763512100782704414532296

List of values

[1, 3, 30, 408, 6402, 109137, 1964010, 36718680, 706221210, 13883562732, 277730910840, 5635185129696, 115693119210270, 2398955889524934, 50167967688522012, 1056869531313301200, 22407983968252808586, 477791976566108489700, 10238908702033904618856, 220401923906465000263200, 4763512100782704414532296]

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

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