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.

A003235 a(n) = Sum_{k=0..n} (-1)^(n-k) C(n,k)*C(k^2,n).

Table of values

n a(n)
0 1
1 1
2 6
3 72
4 1322
5 32550
6 1003632
7 37162384
8 1605962556
9 79330914540
10 4409098539560
11 272297452742304
12 18499002436677336
13 1371050716542451672
14 110085169034456183232
15 9519063815009322326400
16 881914870734754844035088
17 87154631117420724492647184

List of values

[1, 1, 6, 72, 1322, 32550, 1003632, 37162384, 1605962556, 79330914540, 4409098539560, 272297452742304, 18499002436677336, 1371050716542451672, 110085169034456183232, 9519063815009322326400, 881914870734754844035088, 87154631117420724492647184]

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

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