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.

A131683 a(n) = 4*(n^1 + 1!)*(n^2 + 2!)*(n^3 + 3!)*(n^4 + 4!)/4!.

Table of values

n a(n)
0 48
1 175
2 1680
3 25410
4 294000
5 2295513
6 12991440
7 57550100
8 211281840
9 669529875
10 1885734928
11 4823347830
12 11387316720
13 25126129245
14 52326450000
15 103659864168
16 196585724720
17 358766207415
18 632810010000
19 1082730294250
20 1802581066608
21 2927824829985
22 4650083620560

List of values

[48, 175, 1680, 25410, 294000, 2295513, 12991440, 57550100, 211281840, 669529875, 1885734928, 4823347830, 11387316720, 25126129245, 52326450000, 103659864168, 196585724720, 358766207415, 632810010000, 1082730294250, 1802581066608, 2927824829985, 4650083620560]