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.

A131509 a(n) = (n + 1)*(n^2 + 2)*(n^3 + 3)/6.

Table of values

n a(n)
0 1
1 4
2 33
3 220
4 1005
5 3456
6 9709
7 23528
8 50985
9 101260
10 187561
11 328164
12 547573
13 877800
14 1359765
15 2044816
16 2996369
17 4291668
18 6023665
19 8303020
20 11260221
21 15047824
22 19842813
23 25849080
24 33300025
25 42461276
26 53633529
27 67155508
28 83407045
29 102812280
30 125842981

List of values

[1, 4, 33, 220, 1005, 3456, 9709, 23528, 50985, 101260, 187561, 328164, 547573, 877800, 1359765, 2044816, 2996369, 4291668, 6023665, 8303020, 11260221, 15047824, 19842813, 25849080, 33300025, 42461276, 53633529, 67155508, 83407045, 102812280, 125842981]