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.

A156653 Triangle T(n,k) = ((-1)^(n+k)/(n+1))*Sum_{j=0..n} (-1)^j*j!*Stirling2(n, j)* binomial(n-j, k)*binomial(n+j, j), read by rows.

Table of values

n a(n)
0 1
1 1
2 3
3 1
4 16
5 13
6 1
7 125
8 171
9 39
10 1
11 1296
12 2551
13 1091
14 101
15 1
16 16807
17 43653
18 28838
19 5498
20 243
21 1
22 262144
23 850809
24 780585
25 243790
26 24270
27 561
28 1
29 4782969
30 18689527
31 22278189
32 10073955
33 1733035
34 98661
35 1263
36 1

List of values

[1, 1, 3, 1, 16, 13, 1, 125, 171, 39, 1, 1296, 2551, 1091, 101, 1, 16807, 43653, 28838, 5498, 243, 1, 262144, 850809, 780585, 243790, 24270, 561, 1, 4782969, 18689527, 22278189, 10073955, 1733035, 98661, 1263, 1]