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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.

A319466 G.f.: Sum_{n>=0} ( (1+x)^n - 1/(1+x)^n )^n.

Table of values

n a(n)
0 1
1 2
2 15
3 201
4 3807
5 93103
6 2788528
7 98816388
8 4043274742
9 187583369889
10 9729671519992
11 557914167187926
12 35044465503390938
13 2392988036211331477
14 176493963957191423895
15 13982630491776175877953
16 1184241622895183679920962
17 106774511855374079570593467
18 10211007157153638802035266227
19 1032332791948276849592811619207

List of values

[1, 2, 15, 201, 3807, 93103, 2788528, 98816388, 4043274742, 187583369889, 9729671519992, 557914167187926, 35044465503390938, 2392988036211331477, 176493963957191423895, 13982630491776175877953, 1184241622895183679920962, 106774511855374079570593467, 10211007157153638802035266227, 1032332791948276849592811619207]

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

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