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.

A326179 Number of subsets of {1..n} containing n whose product is divisible by their sum.

Table of values

n a(n)
0 0
1 1
2 1
3 2
4 1
5 5
6 9
7 15
8 30
9 65
10 138
11 274
12 563
13 1149
14 2441
15 5110
16 9090
17 19645
18 37524
19 79178
20 156697
21 324182
22 663749
23 1353984
24 2529510
25 5088926
26 10686159
27 19987129
28 40800192
29 85303150
30 162549135
31 341440697
32 630392773
33 1317158898
34 2687152135
35 5276362642
36 10078384386
37 21415439670
38 43367751196
39 86613992774
40 166456115593

List of values

[0, 1, 1, 2, 1, 5, 9, 15, 30, 65, 138, 274, 563, 1149, 2441, 5110, 9090, 19645, 37524, 79178, 156697, 324182, 663749, 1353984, 2529510, 5088926, 10686159, 19987129, 40800192, 85303150, 162549135, 341440697, 630392773, 1317158898, 2687152135, 5276362642, 10078384386, 21415439670, 43367751196, 86613992774, 166456115593]

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

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