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.

A057003 Write the natural numbers in groups: 1; 2,3; 4,5,6; 7,8,9,10; ... and multiply the members of each group.

Table of values

n a(n)
1 1
2 6
3 120
4 5040
5 360360
6 39070080
7 5967561600
8 1220096908800
9 321570878428800
10 106137499051584000
11 42873948150095462400
12 20803502274492921984000
13 11938961126118491232768000
14 7998487694738166709923840000
15 6185983879158893706209144832000

List of values

[1, 6, 120, 5040, 360360, 39070080, 5967561600, 1220096908800, 321570878428800, 106137499051584000, 42873948150095462400, 20803502274492921984000, 11938961126118491232768000, 7998487694738166709923840000, 6185983879158893706209144832000]

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

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