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.

A317883 Number of free pure achiral multifunctions with one atom and n positions.

Table of values

n a(n)
1 1
2 0
3 1
4 1
5 3
6 4
7 10
8 17
9 37
10 70
11 150
12 299
13 634
14 1311
15 2786
16 5879
17 12584
18 26904
19 58005
20 125242
21 271819
22 591297
23 1290976
24 2825170
25 6199964
26 13635749
27 30057649
28 66386206
29 146903289
30 325637240
31 723024160
32 1607805207
33 3580476340
34 7984266625
35 17827226469

List of values

[1, 0, 1, 1, 3, 4, 10, 17, 37, 70, 150, 299, 634, 1311, 2786, 5879, 12584, 26904, 58005, 125242, 271819, 591297, 1290976, 2825170, 6199964, 13635749, 30057649, 66386206, 146903289, 325637240, 723024160, 1607805207, 3580476340, 7984266625, 17827226469]