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.

A369393 a(n) = 2^n*(((n + 1)/2)^n - n!).

Table of values

n a(n)
0 0
1 0
2 1
3 16
4 241
5 3936
6 71569
7 1452032
8 32724801
9 814205440
10 22221533401
11 661258764288
12 21336094568881
13 742703018860544
14 27764596902369825
15 1110071630916222976
16 47289995917566900481
17 2139290897163297619968
18 102449006445196880700841
19 5179102933596854288384000
20 275667346790825720172556401

List of values

[0, 0, 1, 16, 241, 3936, 71569, 1452032, 32724801, 814205440, 22221533401, 661258764288, 21336094568881, 742703018860544, 27764596902369825, 1110071630916222976, 47289995917566900481, 2139290897163297619968, 102449006445196880700841, 5179102933596854288384000, 275667346790825720172556401]

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

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