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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.

A302103 G.f. A(x) satisfies: A(x) = Sum_{n>=0} (2 + x*A(x)^n)^n / 3^(n+1).

Table of values

n a(n)
0 1
1 1
2 6
3 63
4 837
5 12672
6 208686
7 3647568
8 66697203
9 1264307667
10 24696153573
11 495076265421
12 10157438738790
13 212900154037875
14 4553735135491134
15 99341289091151409
16 2210262851488661562
17 50173932628981325523
18 1162965513498859292415
19 27554435907912281877315
20 668277970101220006626558
21 16617278354076763108026795

List of values

[1, 1, 6, 63, 837, 12672, 208686, 3647568, 66697203, 1264307667, 24696153573, 495076265421, 10157438738790, 212900154037875, 4553735135491134, 99341289091151409, 2210262851488661562, 50173932628981325523, 1162965513498859292415, 27554435907912281877315, 668277970101220006626558, 16617278354076763108026795]

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