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.

A370040 Triangle of coefficients T(n,k) in g.f. A(x,y) satisfying Sum_{n=-oo..+oo} (-1)^n * (x^n + y*A(x,y))^n = 1 + (y+2)*Sum_{n>=1} (-1)^n * x^(n^2), for n >= 1, as read by rows.

Table of values

n a(n)
1 1
2 0
3 1
4 3
5 0
6 1
7 -1
8 9
9 0
10 1
11 9
12 -6
13 18
14 0
15 1
16 -3
17 54
18 -19
19 30
20 0
21 1
22 22
23 -54
24 185
25 -44
26 45
27 0
28 1
29 -9
30 264
31 -294
32 475
33 -85
34 63
35 0
36 1
37 52
38 -324
39 1463
40 -1026
41 1020
42 -146
43 84
44 0
45 1
46 -22
47 1127
48 -2715
49 5531
50 -2781
51 1939
52 -231
53 108
54 0
55 1
56 111
57 -1534
58 9648
59 -13430
60 16470
61 -6384
62 3374
63 -344
64 135
65 0
66 1
67 -51
68 4338
69 -19005
70 51853
71 -49032
72 41567
73 -13020
74 5490
75 -489
76 165
77 0
78 1

List of values

[1, 0, 1, 3, 0, 1, -1, 9, 0, 1, 9, -6, 18, 0, 1, -3, 54, -19, 30, 0, 1, 22, -54, 185, -44, 45, 0, 1, -9, 264, -294, 475, -85, 63, 0, 1, 52, -324, 1463, -1026, 1020, -146, 84, 0, 1, -22, 1127, -2715, 5531, -2781, 1939, -231, 108, 0, 1, 111, -1534, 9648, -13430, 16470, -6384, 3374, -344, 135, 0, 1, -51, 4338, -19005, 51853, -49032, 41567, -13020, 5490, -489, 165, 0, 1]