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.

A154593 A triangle of polynomial coefficients:{a, b, c, d} = {2, 3, 3, 2}; p(x,n)=(-1)^(n)*(1 - d - c x)^(n + 1)*Sum[(a*k + b)^n*(c*x + d)^k, {k, 0, Infinity}].

Table of values

n a(n)
0 1
1 -1
2 3
3 9
4 6
5 9
6 -73
7 -75
8 9
9 27
10 849
11 1644
12 774
13 108
14 81
15 -12241
16 -33849
17 -28098
18 -6426
19 243
20 243
21 211929
22 763314
23 938007
24 442044
25 60183
26 1458
27 729
28 -4280473
29 -18995271
30 -31035393
31 -22471479
32 -6681123
33 -528525
34 3645
35 2187
36 98806689
37 521068632
38 1064559708
39 1049509224
40 501783174
41 99717480
42 4802652
43 17496
44 6561

List of values

[1, -1, 3, 9, 6, 9, -73, -75, 9, 27, 849, 1644, 774, 108, 81, -12241, -33849, -28098, -6426, 243, 243, 211929, 763314, 938007, 442044, 60183, 1458, 729, -4280473, -18995271, -31035393, -22471479, -6681123, -528525, 3645, 2187, 98806689, 521068632, 1064559708, 1049509224, 501783174, 99717480, 4802652, 17496, 6561]