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.

A320678 Number of 3-element subsets of [n] having a prime element sum.

Table of values

n a(n)
3 0
4 1
5 2
6 6
7 10
8 18
9 26
10 37
11 47
12 62
13 76
14 96
15 116
16 143
17 170
18 205
19 241
20 285
21 329
22 382
23 434
24 495
25 555
26 627
27 698
28 781
29 865
30 962
31 1059
32 1168
33 1276
34 1397
35 1517
36 1652
37 1786
38 1936
39 2086
40 2253
41 2419
42 2600
43 2779
44 2974
45 3168
46 3378
47 3588
48 3818
49 4048
50 4296
51 4543
52 4809
53 5073

List of values

[0, 1, 2, 6, 10, 18, 26, 37, 47, 62, 76, 96, 116, 143, 170, 205, 241, 285, 329, 382, 434, 495, 555, 627, 698, 781, 865, 962, 1059, 1168, 1276, 1397, 1517, 1652, 1786, 1936, 2086, 2253, 2419, 2600, 2779, 2974, 3168, 3378, 3588, 3818, 4048, 4296, 4543, 4809, 5073]

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

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