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.

A237202 Irregular triangle read by rows: T(n,k) = Sum_{i=0..k} (-1)^i * binomial(5*n+1,i) * binomial(k+5-i,5)^n, 0 <= k <= 5*(n-1).

Table of values

n a(n)
1 1
2 1
3 25
4 100
5 100
6 25
7 1
8 1
9 200
10 5925
11 52800
12 182700
13 273504
14 182700
15 52800
16 5925
17 200
18 1
19 1
20 1275
21 167475
22 6021225
23 84646275
24 554083761
25 1858142825
26 3363309675
27 3363309675
28 1858142825
29 554083761
30 84646275

List of values

[1, 1, 25, 100, 100, 25, 1, 1, 200, 5925, 52800, 182700, 273504, 182700, 52800, 5925, 200, 1, 1, 1275, 167475, 6021225, 84646275, 554083761, 1858142825, 3363309675, 3363309675, 1858142825, 554083761, 84646275]