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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.

A090116 a(n)=x is the least number such that x^2 is "surrounded" by two closest primes, prevprime(x^2) and nextprime(x^2), whose difference nextprime - prevprime = 2n.

Table of values

n a(n)
1 2
2 3
3 5
4 19
5 12
6 25
7 11
8 44
9 23
10 30
11 57
12 41
13 50
14 102
15 76
16 104
17 100
18 149
19 175
20 159
21 348
22 276
23 305
24 397
25 461
26 189
27 345
28 1059
29 437
30 820
31 833
32 1002
33 509
34 1283
35 822
36 1099
37 729
38 1090
39 693
40 2710
41 1110
42 1284
43 3563
44 1823
45 1370
46 4332
47 3771
48 1380
49 4394
50 2160
51 2011
52 1498

List of values

[2, 3, 5, 19, 12, 25, 11, 44, 23, 30, 57, 41, 50, 102, 76, 104, 100, 149, 175, 159, 348, 276, 305, 397, 461, 189, 345, 1059, 437, 820, 833, 1002, 509, 1283, 822, 1099, 729, 1090, 693, 2710, 1110, 1284, 3563, 1823, 1370, 4332, 3771, 1380, 4394, 2160, 2011, 1498]