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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.

A112039 Let b(0)=1/2, b(n) = b(n-1) + Prime[n]/2; a(n)=b(2*n).

Table of values

n a(n)
1 3
2 9
3 21
4 39
5 65
6 99
7 141
8 191
9 251
10 320
11 396
12 482
13 581
14 686
15 797
16 926
17 1064
18 1214
19 1374
20 1544
21 1724
22 1916
23 2114
24 2331
25 2559
26 2795
27 3041
28 3301
29 3571
30 3850
31 4138
32 4447
33 4762
34 5096
35 5444
36 5800
37 6170
38 6551
39 6944
40 7349
41 7769
42 8201
43 8642
44 9095
45 9557
46 10030

List of values

[3, 9, 21, 39, 65, 99, 141, 191, 251, 320, 396, 482, 581, 686, 797, 926, 1064, 1214, 1374, 1544, 1724, 1916, 2114, 2331, 2559, 2795, 3041, 3301, 3571, 3850, 4138, 4447, 4762, 5096, 5444, 5800, 6170, 6551, 6944, 7349, 7769, 8201, 8642, 9095, 9557, 10030]

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

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