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.

A240988 Denominators of the (reduced) rationals (((n-1)!!)/(n!! * 2^((1 + (-1)^n)/2)))^((-1)^n), where n is a positive integer.

Table of values

n a(n)
1 1
2 4
3 2
4 16
5 8
6 32
7 16
8 256
9 128
10 512
11 256
12 2048
13 1024
14 4096
15 2048
16 65536
17 32768
18 131072
19 65536
20 524288
21 262144
22 1048576
23 524288
24 8388608
25 4194304
26 16777216
27 8388608
28 67108864
29 33554432
30 134217728
31 67108864
32 4294967296
33 2147483648
34 8589934592
35 4294967296

List of values

[1, 4, 2, 16, 8, 32, 16, 256, 128, 512, 256, 2048, 1024, 4096, 2048, 65536, 32768, 131072, 65536, 524288, 262144, 1048576, 524288, 8388608, 4194304, 16777216, 8388608, 67108864, 33554432, 134217728, 67108864, 4294967296, 2147483648, 8589934592, 4294967296]