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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.

A276358 G.f. A(x) satisfies: A(x - x*A(x)) = x + x*A(x).

Table of values

n a(n)
1 1
2 2
3 8
4 46
5 324
6 2608
7 23136
8 221370
9 2252872
10 24153284
11 270922880
12 3163154736
13 38291322000
14 479133266432
15 6181998751808
16 82084129578414
17 1119798740473788
18 15674024566862424
19 224843628257016920
20 3302256609111585300
21 49613275311027132672
22 761926428688868584400
23 11952618573953745931536
24 191418290850831848697272
25 3127755564602007721663352
26 52118116918762815035493760
27 885205781290692080951844800
28 15318116453244882343710519680
29 269953482313408263924956600000

List of values

[1, 2, 8, 46, 324, 2608, 23136, 221370, 2252872, 24153284, 270922880, 3163154736, 38291322000, 479133266432, 6181998751808, 82084129578414, 1119798740473788, 15674024566862424, 224843628257016920, 3302256609111585300, 49613275311027132672, 761926428688868584400, 11952618573953745931536, 191418290850831848697272, 3127755564602007721663352, 52118116918762815035493760, 885205781290692080951844800, 15318116453244882343710519680, 269953482313408263924956600000]

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