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.

A173585 Triangle T(n, k, q) = c(n, q)/(c(k, q)*c(n-k, q)), where c(n, q) = Product_{j=1..n} t(2*j, q), t(n, q) = (1/4)*( (2 + sqrt(q))^n + (2 - sqrt(q))^n - 2 ), and q = 3, read by rows.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 16
5 1
6 1
7 225
8 225
9 1
10 1
11 3136
12 44100
13 3136
14 1
15 1
16 43681
17 8561476
18 8561476
19 43681
20 1
21 1
22 608400
23 1660970025
24 23150231104
25 1660970025
26 608400
27 1
28 1
29 8473921
30 322220846025
31 62555239000969
32 62555239000969
33 322220846025
34 8473921
35 1

List of values

[1, 1, 1, 1, 16, 1, 1, 225, 225, 1, 1, 3136, 44100, 3136, 1, 1, 43681, 8561476, 8561476, 43681, 1, 1, 608400, 1660970025, 23150231104, 1660970025, 608400, 1, 1, 8473921, 322220846025, 62555239000969, 62555239000969, 322220846025, 8473921, 1]