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.

A331420 a(n) is the number of subsets of {1..n} that contain exactly 5 odd numbers.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 16
10 32
11 192
12 384
13 1344
14 2688
15 7168
16 14336
17 32256
18 64512
19 129024
20 258048
21 473088
22 946176
23 1622016
24 3244032
25 5271552
26 10543104
27 16400384
28 32800768
29 49201152
30 98402304
31 143130624
32 286261248
33 405536768
34 811073536
35 1123024896
36 2246049792
37 3048210432
38 6096420864

List of values

[0, 0, 0, 0, 0, 0, 0, 0, 16, 32, 192, 384, 1344, 2688, 7168, 14336, 32256, 64512, 129024, 258048, 473088, 946176, 1622016, 3244032, 5271552, 10543104, 16400384, 32800768, 49201152, 98402304, 143130624, 286261248, 405536768, 811073536, 1123024896, 2246049792, 3048210432, 6096420864]