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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.

A216688 Expansion of e.g.f. exp( x * exp(x^2) ).

Table of values

n a(n)
0 1
1 1
2 1
3 7
4 25
5 121
6 841
7 4831
8 40657
9 325585
10 2913841
11 29910871
12 301088041
13 3532945417
14 41595396025
15 531109561711
16 7197739614241
17 100211165640481
18 1507837436365537
19 23123578483200295
20 376697477235716281
21 6348741961892933401
22 111057167658053740201
23 2032230051717594032767

List of values

[1, 1, 1, 7, 25, 121, 841, 4831, 40657, 325585, 2913841, 29910871, 301088041, 3532945417, 41595396025, 531109561711, 7197739614241, 100211165640481, 1507837436365537, 23123578483200295, 376697477235716281, 6348741961892933401, 111057167658053740201, 2032230051717594032767]

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

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