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.

A294464 Expansion of e.g.f. Product_{k>0} (1+k*x^k)^(1/k).

Table of values

n a(n)
0 1
1 1
2 2
3 12
4 36
5 300
6 2520
7 20160
8 75600
9 2192400
10 30996000
11 276091200
12 2165486400
13 19070251200
14 968042275200
15 41954552640000
16 190974944160000
17 230641066656000
18 95607669148992000
19 -2052972258809472000
20 22839078791168640000
21 5074390517301705600000

List of values

[1, 1, 2, 12, 36, 300, 2520, 20160, 75600, 2192400, 30996000, 276091200, 2165486400, 19070251200, 968042275200, 41954552640000, 190974944160000, 230641066656000, 95607669148992000, -2052972258809472000, 22839078791168640000, 5074390517301705600000]