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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.

A316140 Denominator of the autosequence 2/((n+2)*(n+3)) difference table written by antidiagonals.

Table of values

n a(n)
0 3
1 6
2 6
3 10
4 15
5 10
6 15
7 30
8 30
9 15
10 21
11 105
12 70
13 105
14 21
15 28
16 84
17 140
18 140
19 84
20 28
21 36
22 126
23 252
24 315
25 252
26 126
27 36
28 45
29 180
30 420
31 630
32 630
33 420
34 180
35 45
36 55
37 495
38 660
39 1155
40 1386
41 1155
42 660
43 495
44 55
45 66
46 330

List of values

[3, 6, 6, 10, 15, 10, 15, 30, 30, 15, 21, 105, 70, 105, 21, 28, 84, 140, 140, 84, 28, 36, 126, 252, 315, 252, 126, 36, 45, 180, 420, 630, 630, 420, 180, 45, 55, 495, 660, 1155, 1386, 1155, 660, 495, 55, 66, 330]