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.

A305402 A number triangle T(n,k) read by rows for 0<=k<=n, related to the Taylor expansion of f(u, p) = (1/2)*(1+1/(sqrt(1-u^2)))*exp(p*sqrt(1-u^2)).

Table of values

n a(n)
0 1
1 1
2 -2
3 3
4 -4
5 2
6 15
7 -18
8 9
9 -2
10 105
11 -120
12 60
13 -16
14 2
15 945
16 -1050
17 525
18 -150
19 25
20 -2
21 10395
22 -11340
23 5670
24 -1680
25 315
26 -36
27 2
28 135135
29 -145530
30 72765
31 -22050
32 4410
33 -588
34 49
35 -2
36 2027025
37 -2162160
38 1081080
39 -332640
40 69300
41 -10080
42 1008
43 -64
44 2

List of values

[1, 1, -2, 3, -4, 2, 15, -18, 9, -2, 105, -120, 60, -16, 2, 945, -1050, 525, -150, 25, -2, 10395, -11340, 5670, -1680, 315, -36, 2, 135135, -145530, 72765, -22050, 4410, -588, 49, -2, 2027025, -2162160, 1081080, -332640, 69300, -10080, 1008, -64, 2]