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.

A175553 Product of first k triangular numbers divided by the sum of first k triangular numbers is an integer.

Table of values

n a(n)
1 1
2 4
3 7
4 8
5 10
6 12
7 13
8 14
9 16
10 18
11 19
12 20
13 22
14 23
15 24
16 25
17 26
18 28
19 30
20 31
21 32
22 33
23 34
24 36
25 37
26 38
27 40
28 42
29 43
30 44
31 46
32 47
33 48
34 49
35 50
36 52
37 53
38 54
39 55
40 56
41 58
42 60
43 61
44 62
45 63
46 64
47 66
48 67
49 68
50 70
51 72
52 73
53 74
54 75
55 76
56 78
57 79
58 80
59 82
60 83
61 84
62 85
63 86
64 88
65 89
66 90
67 91
68 92
69 93
70 94
71 96

List of values

[1, 4, 7, 8, 10, 12, 13, 14, 16, 18, 19, 20, 22, 23, 24, 25, 26, 28, 30, 31, 32, 33, 34, 36, 37, 38, 40, 42, 43, 44, 46, 47, 48, 49, 50, 52, 53, 54, 55, 56, 58, 60, 61, 62, 63, 64, 66, 67, 68, 70, 72, 73, 74, 75, 76, 78, 79, 80, 82, 83, 84, 85, 86, 88, 89, 90, 91, 92, 93, 94, 96]

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

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