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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.

A171213 G.f.: A(x) satisfies A(x) = x + x*A(A(3*x)).

Table of values

n a(n)
1 1
2 3
3 54
4 3402
5 618921
6 318392208
7 474852630879
8 2094575471899362
9 27570620677894020891
10 1086589159409074932937593
11 128377839432663886566934695744
12 45490432595875817814676362194769627

List of values

[1, 3, 54, 3402, 618921, 318392208, 474852630879, 2094575471899362, 27570620677894020891, 1086589159409074932937593, 128377839432663886566934695744, 45490432595875817814676362194769627]

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

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