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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.

A378265 Terms k of A358657 such that lpf(k-1) and lpf(k+1) are twin primes pair, where lpf(k) = A020639(k) is the least prime dividing k.

Table of values

n a(n)
1 216
2 1591596
3 2046456
4 2051496
5 3108204
6 8933184
7 10496844
8 10630836
9 13579236
10 20866644
11 26666856
12 27288036
13 30398544
14 30538404
15 33949656
16 34851384
17 35722044
18 36657180
19 38588544
20 48634956
21 67747896
22 81982116
23 82130796
24 87172884
25 87865056
26 98639100
27 100473444

List of values

[216, 1591596, 2046456, 2051496, 3108204, 8933184, 10496844, 10630836, 13579236, 20866644, 26666856, 27288036, 30398544, 30538404, 33949656, 34851384, 35722044, 36657180, 38588544, 48634956, 67747896, 81982116, 82130796, 87172884, 87865056, 98639100, 100473444]

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

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