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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.

A116392 Riordan array (1/sqrt(1-2*x-3*x^2), 1/sqrt(1-2*x-3*x^2) -1).

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 4
5 1
6 7
7 13
8 7
9 1
10 19
11 42
12 32
13 10
14 1
15 51
16 131
17 128
18 60
19 13
20 1
21 141
22 406
23 475
24 292
25 97
26 16
27 1
28 393
29 1247
30 1685
31 1267
32 561
33 143
34 19
35 1
36 1107
37 3814
38 5800
39 5112
40 2804
41 962
42 198
43 22
44 1
45 3139
46 11623
47 19540
48 19624
49 12748
50 5464
51 1522
52 262
53 25
54 1
55 8953
56 35334

List of values

[1, 1, 1, 3, 4, 1, 7, 13, 7, 1, 19, 42, 32, 10, 1, 51, 131, 128, 60, 13, 1, 141, 406, 475, 292, 97, 16, 1, 393, 1247, 1685, 1267, 561, 143, 19, 1, 1107, 3814, 5800, 5112, 2804, 962, 198, 22, 1, 3139, 11623, 19540, 19624, 12748, 5464, 1522, 262, 25, 1, 8953, 35334]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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