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.

A152152 a(n) = Product_{k=1..n} (1 + 4*sin(2*Pi*k/n)^2).

Table of values

n a(n)
0 0
1 1
2 1
3 16
4 25
5 121
6 256
7 841
8 2025
9 5776
10 14641
11 39601
12 102400
13 271441
14 707281
15 1860496
16 4862025
17 12752041
18 33362176
19 87403801
20 228765625
21 599074576
22 1568239201
23 4106118241
24 10749542400
25 28143753121
26 73680216481
27 192900153616

List of values

[0, 1, 1, 16, 25, 121, 256, 841, 2025, 5776, 14641, 39601, 102400, 271441, 707281, 1860496, 4862025, 12752041, 33362176, 87403801, 228765625, 599074576, 1568239201, 4106118241, 10749542400, 28143753121, 73680216481, 192900153616]