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.

A180047 Coefficient triangle of the numerators of the (n-th convergents to) the continued fraction w/(1 + w/(2 + w/(3 + w/(...)))).

Table of values

n a(n)
0 0
1 0
2 1
3 0
4 2
5 0
6 6
7 1
8 0
9 24
10 6
11 0
12 120
13 36
14 1
15 0
16 720
17 240
18 12
19 0
20 5040
21 1800
22 120
23 1
24 0
25 40320
26 15120
27 1200
28 20
29 0
30 362880
31 141120
32 12600
33 300
34 1
35 0
36 3628800
37 1451520
38 141120
39 4200
40 30
41 0
42 39916800
43 16329600
44 1693440
45 58800
46 630
47 1
48 0
49 479001600

List of values

[0, 0, 1, 0, 2, 0, 6, 1, 0, 24, 6, 0, 120, 36, 1, 0, 720, 240, 12, 0, 5040, 1800, 120, 1, 0, 40320, 15120, 1200, 20, 0, 362880, 141120, 12600, 300, 1, 0, 3628800, 1451520, 141120, 4200, 30, 0, 39916800, 16329600, 1693440, 58800, 630, 1, 0, 479001600]