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.

A133205 Fully multiplicative with a(p) = p*(p+1)/2 for prime p.

Table of values

n a(n)
1 1
2 3
3 6
4 9
5 15
6 18
7 28
8 27
9 36
10 45
11 66
12 54
13 91
14 84
15 90
16 81
17 153
18 108
19 190
20 135
21 168
22 198
23 276
24 162
25 225
26 273
27 216
28 252
29 435
30 270
31 496
32 243
33 396
34 459
35 420
36 324
37 703
38 570
39 546
40 405
41 861
42 504
43 946
44 594
45 540
46 828
47 1128
48 486
49 784
50 675
51 918
52 819
53 1431
54 648
55 990
56 756

List of values

[1, 3, 6, 9, 15, 18, 28, 27, 36, 45, 66, 54, 91, 84, 90, 81, 153, 108, 190, 135, 168, 198, 276, 162, 225, 273, 216, 252, 435, 270, 496, 243, 396, 459, 420, 324, 703, 570, 546, 405, 861, 504, 946, 594, 540, 828, 1128, 486, 784, 675, 918, 819, 1431, 648, 990, 756]

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

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