cp's OEIS Frontend

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.

A291816 G.f. A(x) satisfies: A(x - 3*x*A(x)) = x - x*A(x).

Table of values

n a(n)
1 1
2 2
3 16
4 182
5 2524
6 39992
7 699520
8 13231034
9 266985280
10 5694001172
11 127481465536
12 2981125793144
13 72532301230672
14 1830526849868000
15 47802726801684544
16 1289123410465365782
17 35841130838977837348
18 1025903099063974343984
19 30195807234087904770952
20 912951678159786641659796
21 28327442752528049524839856
22 901289532361030971832330544
23 29382621186595702051011638128

List of values

[1, 2, 16, 182, 2524, 39992, 699520, 13231034, 266985280, 5694001172, 127481465536, 2981125793144, 72532301230672, 1830526849868000, 47802726801684544, 1289123410465365782, 35841130838977837348, 1025903099063974343984, 30195807234087904770952, 912951678159786641659796, 28327442752528049524839856, 901289532361030971832330544, 29382621186595702051011638128]

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

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