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.

A174301 A symmetrical triangle: T(n,k) = binomial(n, k)*if(floor(n/2) greater than or equal to k then 4^k, otherwise 4^(n-k)).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 8
5 1
6 1
7 12
8 12
9 1
10 1
11 16
12 96
13 16
14 1
15 1
16 20
17 160
18 160
19 20
20 1
21 1
22 24
23 240
24 1280
25 240
26 24
27 1
28 1
29 28
30 336
31 2240
32 2240
33 336
34 28
35 1
36 1
37 32
38 448
39 3584
40 17920
41 3584
42 448
43 32
44 1
45 1
46 36
47 576
48 5376
49 32256
50 32256
51 5376
52 576
53 36
54 1
55 1
56 40
57 720
58 7680
59 53760
60 258048
61 53760
62 7680
63 720
64 40
65 1

List of values

[1, 1, 1, 1, 8, 1, 1, 12, 12, 1, 1, 16, 96, 16, 1, 1, 20, 160, 160, 20, 1, 1, 24, 240, 1280, 240, 24, 1, 1, 28, 336, 2240, 2240, 336, 28, 1, 1, 32, 448, 3584, 17920, 3584, 448, 32, 1, 1, 36, 576, 5376, 32256, 32256, 5376, 576, 36, 1, 1, 40, 720, 7680, 53760, 258048, 53760, 7680, 720, 40, 1]