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.

A319258 a(n) = 1 + 2*3 + 4 + 5*6 + 7 + 8*9 + 10 + 11*12 + ... + (up to n).

Table of values

n a(n)
1 1
2 3
3 7
4 11
5 16
6 41
7 48
8 56
9 120
10 130
11 141
12 262
13 275
14 289
15 485
16 501
17 518
18 807
19 826
20 846
21 1246
22 1268
23 1291
24 1820
25 1845
26 1871
27 2547
28 2575
29 2604
30 3445
31 3476
32 3508
33 4532
34 4566
35 4601
36 5826
37 5863
38 5901
39 7345
40 7385
41 7426
42 9107
43 9150
44 9194
45 11130
46 11176
47 11223

List of values

[1, 3, 7, 11, 16, 41, 48, 56, 120, 130, 141, 262, 275, 289, 485, 501, 518, 807, 826, 846, 1246, 1268, 1291, 1820, 1845, 1871, 2547, 2575, 2604, 3445, 3476, 3508, 4532, 4566, 4601, 5826, 5863, 5901, 7345, 7385, 7426, 9107, 9150, 9194, 11130, 11176, 11223]

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

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