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.

A331130 a(n) = Sum_{i=1..n} u_3(i)*u_3(i+1), where u_3(n) = A034836(n).

Table of values

n a(n)
1 1
2 2
3 4
4 6
5 8
6 10
7 13
8 19
9 23
10 25
11 29
12 33
13 35
14 39
15 47
16 51
17 55
18 59
19 63
20 71
21 75
22 77
23 83
24 95
25 99
26 105
27 117
28 121
29 126
30 131
31 136
32 146
33 150
34 154
35 170
36 178
37 180
38 184
39 196
40 202
41 207
42 212
43 216
44 232
45 240
46 242
47 251
48 269
49 277
50 285
51 293
52 297
53 303
54 315
55 327
56 339
57 343
58 345
59 355
60 365

List of values

[1, 2, 4, 6, 8, 10, 13, 19, 23, 25, 29, 33, 35, 39, 47, 51, 55, 59, 63, 71, 75, 77, 83, 95, 99, 105, 117, 121, 126, 131, 136, 146, 150, 154, 170, 178, 180, 184, 196, 202, 207, 212, 216, 232, 240, 242, 251, 269, 277, 285, 293, 297, 303, 315, 327, 339, 343, 345, 355, 365]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.