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.

A169788 a(n) = n(n+1)/2 - A169780(n).

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 1
5 4
6 6
7 7
8 7
9 14
10 20
11 25
12 27
13 30
14 36
15 37
16 37
17 52
18 66
19 79
20 89
21 100
22 112
23 117
24 115
25 122
26 140
27 153
28 157
29 158
30 168
31 167
32 167
33 198
34 228
35 257
36 283
37 310
38 338
39 359
40 373
41 396
42 428
43 453
44 467
45 474
46 486
47 491
48 481
49 496
50 538
51 575
52 603
53 628
54 654
55 665
56 653
57 650
58 680
59 707
60 711

List of values

[0, 0, 0, 1, 1, 4, 6, 7, 7, 14, 20, 25, 27, 30, 36, 37, 37, 52, 66, 79, 89, 100, 112, 117, 115, 122, 140, 153, 157, 158, 168, 167, 167, 198, 228, 257, 283, 310, 338, 359, 373, 396, 428, 453, 467, 474, 486, 491, 481, 496, 538, 575, 603, 628, 654, 665, 653, 650, 680, 707, 711]