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.

A257609 Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = 2*x + 2.

Table of values

n a(n)
0 1
1 2
2 2
3 4
4 16
5 4
6 8
7 88
8 88
9 8
10 16
11 416
12 1056
13 416
14 16
15 32
16 1824
17 9664
18 9664
19 1824
20 32
21 64
22 7680
23 76224
24 154624
25 76224
26 7680
27 64
28 128
29 31616
30 549504
31 1999232
32 1999232
33 549504
34 31616
35 128
36 256
37 128512
38 3739648
39 22587904
40 39984640
41 22587904
42 3739648
43 128512
44 256

List of values

[1, 2, 2, 4, 16, 4, 8, 88, 88, 8, 16, 416, 1056, 416, 16, 32, 1824, 9664, 9664, 1824, 32, 64, 7680, 76224, 154624, 76224, 7680, 64, 128, 31616, 549504, 1999232, 1999232, 549504, 31616, 128, 256, 128512, 3739648, 22587904, 39984640, 22587904, 3739648, 128512, 256]