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.

A013621 Triangle of coefficients in expansion of (2+5x)^n.

Table of values

n a(n)
0 1
1 2
2 5
3 4
4 20
5 25
6 8
7 60
8 150
9 125
10 16
11 160
12 600
13 1000
14 625
15 32
16 400
17 2000
18 5000
19 6250
20 3125
21 64
22 960
23 6000
24 20000
25 37500
26 37500
27 15625
28 128
29 2240
30 16800
31 70000
32 175000
33 262500
34 218750
35 78125
36 256
37 5120
38 44800
39 224000
40 700000
41 1400000

List of values

[1, 2, 5, 4, 20, 25, 8, 60, 150, 125, 16, 160, 600, 1000, 625, 32, 400, 2000, 5000, 6250, 3125, 64, 960, 6000, 20000, 37500, 37500, 15625, 128, 2240, 16800, 70000, 175000, 262500, 218750, 78125, 256, 5120, 44800, 224000, 700000, 1400000]