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.

A129358 G.f.: A(x) = Product_{n>=1} [ (1-x)^5*(1 + 5x + 15x^2 +...+ n(n+1)(n+2)(n+3)/4!*x^(n-1)) ].

Table of values

n a(n)
0 1
1 -5
2 -5
3 70
4 -180
5 770
6 -4760
7 20840
8 -68085
9 147890
10 -795
11 -1679855
12 8378195
13 -25065005
14 56439545
15 -145200415
16 612604910
17 -2764023765
18 10020060660
19 -28723695265
20 67618167310
21 -128945409045
22 137921330680
23 375948665405
24 -3167538981120
25 12823443150644
26 -38103903888575

List of values

[1, -5, -5, 70, -180, 770, -4760, 20840, -68085, 147890, -795, -1679855, 8378195, -25065005, 56439545, -145200415, 612604910, -2764023765, 10020060660, -28723695265, 67618167310, -128945409045, 137921330680, 375948665405, -3167538981120, 12823443150644, -38103903888575]