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.

A384506 a(n) = 2^(n-7)*(n^4 - 6*n^3 + 59*n^2 - 54*n)/3.

Table of values

n a(n)
0 0
1 0
2 1
3 6
4 25
5 90
6 300
7 952
8 2912
9 8640
10 24960
11 70400
12 194304
13 525824
14 1397760
15 3655680
16 9420800
17 23953408
18 60162048
19 149422080
20 367329280
21 894566400
22 2159804416
23 5173149696
24 12299796480
25 29045555200
26 68157440000
27 158997676032
28 368880648192
29 851443712000
30 1955887841280

List of values

[0, 0, 1, 6, 25, 90, 300, 952, 2912, 8640, 24960, 70400, 194304, 525824, 1397760, 3655680, 9420800, 23953408, 60162048, 149422080, 367329280, 894566400, 2159804416, 5173149696, 12299796480, 29045555200, 68157440000, 158997676032, 368880648192, 851443712000, 1955887841280]