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.

A049797 a(n) = Sum_{k = 2..n} T(n,k), array T as in A049800.

Table of values

n a(n)
1 0
2 0
3 0
4 2
5 0
6 4
7 4
8 4
9 6
10 14
11 4
12 14
13 20
14 16
15 16
16 30
17 22
18 38
19 32
20 30
21 44
22 64
23 38
24 50
25 68
26 68
27 66
28 92
29 66
30 94
31 94
32 96
33 122
34 130
35 90
36 124
37 154
38 158
39 136
40 174
41 148
42 188
43 194
44 172
45 210
46 254
47 196
48 228
49 240
50 248
51 258
52 308
53 282
54 302
55 284

List of values

[0, 0, 0, 2, 0, 4, 4, 4, 6, 14, 4, 14, 20, 16, 16, 30, 22, 38, 32, 30, 44, 64, 38, 50, 68, 68, 66, 92, 66, 94, 94, 96, 122, 130, 90, 124, 154, 158, 136, 174, 148, 188, 194, 172, 210, 254, 196, 228, 240, 248, 258, 308, 282, 302, 284]