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.

A318868 a(n) = 1^2 + 3^4 + 5^6 + 7^8 + 9^10 + 11^12 + 13^14 + ... + (up to n).

Table of values

n a(n)
1 1
2 1
3 4
4 82
5 87
6 15707
7 15714
8 5780508
9 5780517
10 3492564909
11 3492564920
12 3141920941630
13 3141920941643
14 3940518306640919
15 3940518306640934
16 6572348874019531544
17 6572348874019531561
18 14069656800941744522553
19 14069656800941744522572
20 37604043114346899937878154

List of values

[1, 1, 4, 82, 87, 15707, 15714, 5780508, 5780517, 3492564909, 3492564920, 3141920941630, 3141920941643, 3940518306640919, 3940518306640934, 6572348874019531544, 6572348874019531561, 14069656800941744522553, 14069656800941744522572, 37604043114346899937878154]

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

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