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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.

A375753 a(n) is the difference between n*(n+1)/2 and the next smaller square of a prime.

Table of values

n a(n)
3 2
4 1
5 6
6 12
7 3
8 11
9 20
10 6
11 17
12 29
13 42
14 56
15 71
16 15
17 32
18 2
19 21
20 41
21 62
22 84
23 107
24 11
25 36
26 62
27 17
28 45
29 74
30 104
31 135
32 167
33 32
34 66
35 101
36 137
37 174
38 212
39 251
40 291
41 20
42 62
43 105
44 29
45 74
46 120
47 167
48 215
49 264
50 314
51 365
52 9
53 62
54 116
55 171
56 227
57 284
58 30
59 89
60 149
61 42
62 104
63 167
64 231
65 296
66 2

List of values

[2, 1, 6, 12, 3, 11, 20, 6, 17, 29, 42, 56, 71, 15, 32, 2, 21, 41, 62, 84, 107, 11, 36, 62, 17, 45, 74, 104, 135, 167, 32, 66, 101, 137, 174, 212, 251, 291, 20, 62, 105, 29, 74, 120, 167, 215, 264, 314, 365, 9, 62, 116, 171, 227, 284, 30, 89, 149, 42, 104, 167, 231, 296, 2]

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

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