cp's OEIS Frontend

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.

A030428 a(n) = 0! * 1! * 2! * ... * n! - 1.

Table of values

n a(n)
0 0
1 0
2 1
3 11
4 287
5 34559
6 24883199
7 125411327999
8 5056584744959999
9 1834933472251084799999
10 6658606584104736522239999999
11 265790267296391946810949631999999999
12 127313963299399416749559771247411199999999999

List of values

[0, 0, 1, 11, 287, 34559, 24883199, 125411327999, 5056584744959999, 1834933472251084799999, 6658606584104736522239999999, 265790267296391946810949631999999999, 127313963299399416749559771247411199999999999]

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

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