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.

A244140 Triangle read by rows: coefficients T(n,k) of a binomial decomposition of n*(-1)^n as Sum(k=0..n)T(n,k)*binomial(n,k).

Table of values

n a(n)
0 0
1 0
2 -1
3 0
4 0
5 2
6 0
7 0
8 0
9 -3
10 0
11 0
12 0
13 -3
14 16
15 0
16 0
17 0
18 -3
19 32
20 -135
21 0
22 0
23 0
24 -3
25 64
26 -405
27 1536
28 0
29 0
30 0
31 -3
32 128
33 -1215
34 6144
35 -21875
36 0
37 0
38 0
39 -3
40 256
41 -3645
42 24576
43 -109375
44 373248
45 0
46 0
47 0
48 -3
49 512
50 -10935
51 98304
52 -546875
53 2239488
54 -7411887
55 0
56 0
57 0
58 -3
59 1024
60 -32805
61 393216
62 -2734375
63 13436928
64 -51883209
65 167772160

List of values

[0, 0, -1, 0, 0, 2, 0, 0, 0, -3, 0, 0, 0, -3, 16, 0, 0, 0, -3, 32, -135, 0, 0, 0, -3, 64, -405, 1536, 0, 0, 0, -3, 128, -1215, 6144, -21875, 0, 0, 0, -3, 256, -3645, 24576, -109375, 373248, 0, 0, 0, -3, 512, -10935, 98304, -546875, 2239488, -7411887, 0, 0, 0, -3, 1024, -32805, 393216, -2734375, 13436928, -51883209, 167772160]