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.

A053533 Expansion of e.g.f.: (1-x)^(-1/2)*exp(-x/2 -x^2/4 -x^3/6 -x^4/8).

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 0
5 12
6 60
7 360
8 2520
9 20160
10 199584
11 2147040
12 25043040
13 315485280
14 4274281440
15 62237343168
16 968728662720
17 16046598597120
18 281802435747840
19 5229395457937920
20 102253297006250496
21 2101387824575550720
22 45281611027331723520

List of values

[1, 0, 0, 0, 0, 12, 60, 360, 2520, 20160, 199584, 2147040, 25043040, 315485280, 4274281440, 62237343168, 968728662720, 16046598597120, 281802435747840, 5229395457937920, 102253297006250496, 2101387824575550720, 45281611027331723520]

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

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