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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.

A321089 G.f.: Sum_{n>=0} ((1+x)^(n+1) - 1)^n.

Table of values

n a(n)
0 1
1 2
2 10
3 82
4 928
5 13406
6 235690
7 4883702
8 116548222
9 3148151702
10 94950591878
11 3162966582742
12 115334767261792
13 4569294561813770
14 195438629679894238
15 8975996556375735458
16 440572146080811981406
17 23015418712779922737206
18 1274980039012724226987966
19 74655326188457739033712062
20 4607114081638141934903219532
21 298862442692043953057588327202

List of values

[1, 2, 10, 82, 928, 13406, 235690, 4883702, 116548222, 3148151702, 94950591878, 3162966582742, 115334767261792, 4569294561813770, 195438629679894238, 8975996556375735458, 440572146080811981406, 23015418712779922737206, 1274980039012724226987966, 74655326188457739033712062, 4607114081638141934903219532, 298862442692043953057588327202]

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

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