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.

A121348 Difference between (n!)^2 and the next smaller factorial.

Table of values

n a(n)
2 1
3 12
4 456
5 9360
6 155520
7 21772800
8 1146700800
9 44503603200
10 11860515072000
11 1237663494144000
12 107797432393728000
13 36342886035456000000
14 6476053728774389760000
15 1089563850990959984640000

List of values

[1, 12, 456, 9360, 155520, 21772800, 1146700800, 44503603200, 11860515072000, 1237663494144000, 107797432393728000, 36342886035456000000, 6476053728774389760000, 1089563850990959984640000]

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

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