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.

A213839 Principal diagonal of the convolution array A213838.

Table of values

n a(n)
1 1
2 20
3 89
4 240
5 505
6 916
7 1505
8 2304
9 3345
10 4660
11 6281
12 8240
13 10569
14 13300
15 16465
16 20096
17 24225
18 28884
19 34105
20 39920
21 46361
22 53460
23 61249
24 69760
25 79025
26 89076
27 99945
28 111664
29 124265
30 137780
31 152241
32 167680

List of values

[1, 20, 89, 240, 505, 916, 1505, 2304, 3345, 4660, 6281, 8240, 10569, 13300, 16465, 20096, 24225, 28884, 34105, 39920, 46361, 53460, 61249, 69760, 79025, 89076, 99945, 111664, 124265, 137780, 152241, 167680]