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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.

A061302 a(n) = n! * [x^n] W(-x)*(W(-x) + 2)/(W(-x) + 1), where W denotes Lambert's W function.

Table of values

n a(n)
0 0
1 2
2 6
3 36
4 320
5 3750
6 54432
7 941192
8 18874368
9 430467210
10 11000000000
11 311249095212
12 9659108818944
13 326173191714734
14 11905721598812160
15 467086816406250000
16 19599665578316398592
17 875901453762003632658

List of values

[0, 2, 6, 36, 320, 3750, 54432, 941192, 18874368, 430467210, 11000000000, 311249095212, 9659108818944, 326173191714734, 11905721598812160, 467086816406250000, 19599665578316398592, 875901453762003632658]

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

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