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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.

A318247 a(n) = [x^n] Product_{k>=1} (1 + n!*x^k).

Table of values

n a(n)
0 1
1 1
2 2
3 42
4 600
5 28920
6 374285520
7 128100273840
8 131101518683520
9 143354704247556480
10 173401404266683545849388800
11 2538767479410416957720411116800
12 105287752487031026606448840363801600
13 4510685217145833106538730603088118860800
14 288804138719404983322786510403231912442931200

List of values

[1, 1, 2, 42, 600, 28920, 374285520, 128100273840, 131101518683520, 143354704247556480, 173401404266683545849388800, 2538767479410416957720411116800, 105287752487031026606448840363801600, 4510685217145833106538730603088118860800, 288804138719404983322786510403231912442931200]

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

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