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.

A001048 a(n) = n! + (n-1)!.

Table of values

n a(n)
1 2
2 3
3 8
4 30
5 144
6 840
7 5760
8 45360
9 403200
10 3991680
11 43545600
12 518918400
13 6706022400
14 93405312000
15 1394852659200
16 22230464256000
17 376610217984000
18 6758061133824000
19 128047474114560000
20 2554547108585472000
21 53523844179886080000
22 1175091669949317120000

List of values

[2, 3, 8, 30, 144, 840, 5760, 45360, 403200, 3991680, 43545600, 518918400, 6706022400, 93405312000, 1394852659200, 22230464256000, 376610217984000, 6758061133824000, 128047474114560000, 2554547108585472000, 53523844179886080000, 1175091669949317120000]

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

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