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.

A074136 Main diagonal of triangle A074135.

Table of values

n a(n)
1 1
2 4
3 7
4 13
5 18
6 21
7 28
8 40
9 49
10 64
11 75
12 81
13 94
14 115
15 130
16 138
17 155
18 182
19 201
20 211
21 232
22 265
23 288
24 300
25 325
26 364
27 391
28 433
29 462
30 477
31 508
32 556
33 589
34 606
35 641
36 695
37 732
38 751
39 790
40 850
41 891
42 912
43 955
44 1021
45 1066
46 1089
47 1136
48 1208
49 1257
50 1282
51 1333
52 1411
53 1464

List of values

[1, 4, 7, 13, 18, 21, 28, 40, 49, 64, 75, 81, 94, 115, 130, 138, 155, 182, 201, 211, 232, 265, 288, 300, 325, 364, 391, 433, 462, 477, 508, 556, 589, 606, 641, 695, 732, 751, 790, 850, 891, 912, 955, 1021, 1066, 1089, 1136, 1208, 1257, 1282, 1333, 1411, 1464]