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.

A138773 Triangle read by rows: T(n,k) is the coefficient of x^k in the polynomial P[n](x) = b(n)Q[n](x), where b(n) = numerator of binomial(2n,n)/2^n = A001790(n) and Q[n](x) = F(-n,1; 1/2-n; x) (hypergeometric function); 0 <= k <= n.

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 4
5 8
6 5
7 6
8 8
9 16
10 35
11 40
12 48
13 64
14 128
15 63
16 70
17 80
18 96
19 128
20 256
21 231
22 252
23 280
24 320
25 384
26 512
27 1024
28 429
29 462
30 504
31 560
32 640
33 768
34 1024
35 2048
36 6435
37 6864
38 7392
39 8064
40 8960
41 10240
42 12288
43 16384
44 32768
45 12155
46 12870
47 13728
48 14784
49 16128
50 17920
51 20480
52 24576
53 32768
54 65536

List of values

[1, 1, 2, 3, 4, 8, 5, 6, 8, 16, 35, 40, 48, 64, 128, 63, 70, 80, 96, 128, 256, 231, 252, 280, 320, 384, 512, 1024, 429, 462, 504, 560, 640, 768, 1024, 2048, 6435, 6864, 7392, 8064, 8960, 10240, 12288, 16384, 32768, 12155, 12870, 13728, 14784, 16128, 17920, 20480, 24576, 32768, 65536]