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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.

A228102 Numbers n such that sum of all primes <=n is prime.

Table of values

n a(n)
1 2
2 3
3 4
4 7
5 8
6 9
7 10
8 13
9 14
10 15
11 16
12 37
13 38
14 39
15 40
16 43
17 44
18 45
19 46
20 281
21 282
22 311
23 312
24 503
25 504
26 505
27 506
28 507
29 508
30 541
31 542
32 543
33 544
34 545
35 546
36 557
37 558
38 559
39 560
40 561
41 562
42 593
43 594
44 595
45 596
46 597
47 598
48 619
49 620
50 621
51 622
52 623
53 624
54 625

List of values

[2, 3, 4, 7, 8, 9, 10, 13, 14, 15, 16, 37, 38, 39, 40, 43, 44, 45, 46, 281, 282, 311, 312, 503, 504, 505, 506, 507, 508, 541, 542, 543, 544, 545, 546, 557, 558, 559, 560, 561, 562, 593, 594, 595, 596, 597, 598, 619, 620, 621, 622, 623, 624, 625]