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.

A081215 a(n) = (n^(n+1)+(-1)^n)/(n+1)^2.

Table of values

n a(n)
0 1
1 0
2 1
3 5
4 41
5 434
6 5713
7 90075
8 1657009
9 34867844
10 826446281
11 21794641505
12 633095889817
13 20088655029078
14 691413758034721
15 25657845139503479
16 1021273028302258913
17 43404581642184336392
18 1961870762757168078553

List of values

[1, 0, 1, 5, 41, 434, 5713, 90075, 1657009, 34867844, 826446281, 21794641505, 633095889817, 20088655029078, 691413758034721, 25657845139503479, 1021273028302258913, 43404581642184336392, 1961870762757168078553]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.