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.

A342134 Square array T(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of g.f. 1/(1 - 2*k*x - k*x^2).

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 2
5 0
6 1
7 4
8 5
9 0
10 1
11 6
12 18
13 12
14 0
15 1
16 8
17 39
18 80
19 29
20 0
21 1
22 10
23 68
24 252
25 356
26 70
27 0
28 1
29 12
30 105
31 576
32 1629
33 1584
34 169
35 0
36 1
37 14
38 150
39 1100
40 4880
41 10530
42 7048
43 408
44 0
45 1
46 16
47 203
48 1872
49 11525
50 41344
51 68067
52 31360
53 985
54 0
55 1
56 18
57 264
58 2940
59 23364
60 120750
61 350272
62 439992
63 139536
64 2378
65 0

List of values

[1, 1, 0, 1, 2, 0, 1, 4, 5, 0, 1, 6, 18, 12, 0, 1, 8, 39, 80, 29, 0, 1, 10, 68, 252, 356, 70, 0, 1, 12, 105, 576, 1629, 1584, 169, 0, 1, 14, 150, 1100, 4880, 10530, 7048, 408, 0, 1, 16, 203, 1872, 11525, 41344, 68067, 31360, 985, 0, 1, 18, 264, 2940, 23364, 120750, 350272, 439992, 139536, 2378, 0]