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.

A271704 Triangle read by rows, T(n,k) = Sum_{j=0..n} (-1)^(n-j)*C(-j,-n)*L(j,k), L the unsigned Lah numbers A271703, for n>=0 and 0<=k<=n.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 3
5 1
6 0
7 11
8 8
9 1
10 0
11 49
12 57
13 15
14 1
15 0
16 261
17 424
18 174
19 24
20 1
21 0
22 1631
23 3425
24 1930
25 410
26 35
27 1
28 0
29 11743
30 30336
31 21855
32 6320
33 825
34 48
35 1
36 0
37 95901
38 294553
39 259161
40 95235
41 16835
42 1491
43 63
44 1
45 0
46 876809
47 3123632
48 3251500
49 1452976
50 325150
51 38864
52 2492
53 80
54 1

List of values

[1, 0, 1, 0, 3, 1, 0, 11, 8, 1, 0, 49, 57, 15, 1, 0, 261, 424, 174, 24, 1, 0, 1631, 3425, 1930, 410, 35, 1, 0, 11743, 30336, 21855, 6320, 825, 48, 1, 0, 95901, 294553, 259161, 95235, 16835, 1491, 63, 1, 0, 876809, 3123632, 3251500, 1452976, 325150, 38864, 2492, 80, 1]