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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.

A117878 Triangle T(n,k) = A034386(n)*A049614(k) - 1 read by rows.

Table of values

n a(n)
1 0
2 1
3 1
4 5
5 5
6 5
7 5
8 5
9 5
10 23
11 29
12 29
13 29
14 119
15 119
16 29
17 29
18 29
19 119
20 119
21 719
22 209
23 209
24 209
25 839
26 839
27 5039
28 5039
29 209
30 209
31 209
32 839
33 839
34 5039
35 5039
36 40319
37 209
38 209
39 209
40 839
41 839
42 5039
43 5039
44 40319
45 362879
46 209
47 209
48 209
49 839
50 839
51 5039
52 5039
53 40319
54 362879

List of values

[0, 1, 1, 5, 5, 5, 5, 5, 5, 23, 29, 29, 29, 119, 119, 29, 29, 29, 119, 119, 719, 209, 209, 209, 839, 839, 5039, 5039, 209, 209, 209, 839, 839, 5039, 5039, 40319, 209, 209, 209, 839, 839, 5039, 5039, 40319, 362879, 209, 209, 209, 839, 839, 5039, 5039, 40319, 362879]

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

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