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.

A186978 Number of ordered septuples of distinct pairwise coprime positive integers with largest element n.

Table of values

n a(n)
13 6
14 0
15 0
16 2
17 56
18 1
19 219
20 13
21 27
22 15
23 777
24 28
25 640
26 102
27 563
28 127
29 3923
30 28
31 7859
32 1792
33 1505
34 966
35 2354
36 392
37 21313
38 2289
39 3969
40 1344
41 42828
42 714
43 69360
44 7566
45 8118
46 8826
47 122883
48 5082
49 93084
50 10890
51 33594
52 19338
53 266024
54 11011
55 82350
56 23298
57 63917

List of values

[6, 0, 0, 2, 56, 1, 219, 13, 27, 15, 777, 28, 640, 102, 563, 127, 3923, 28, 7859, 1792, 1505, 966, 2354, 392, 21313, 2289, 3969, 1344, 42828, 714, 69360, 7566, 8118, 8826, 122883, 5082, 93084, 10890, 33594, 19338, 266024, 11011, 82350, 23298, 63917]

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

Content is available under The OEIS End-User License Agreement.