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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.

A342479 a(n) is the numerator of the asymptotic density of numbers whose second smallest prime divisor (A119288) is prime(n).

Table of values

n a(n)
1 0
2 1
3 1
4 1
5 46
6 44
7 288
8 33216
9 613248
10 151296
11 391584768
12 2383570944
13 86830424064
14 206470840320
15 21270238986240
16 987259950858240
17 1262040231444480
18 3022250536693923840
19 3884253754215628800
20 1102040800033347993600
21 1892288242221318144000
22 5616902226049109065728000

List of values

[0, 1, 1, 1, 46, 44, 288, 33216, 613248, 151296, 391584768, 2383570944, 86830424064, 206470840320, 21270238986240, 987259950858240, 1262040231444480, 3022250536693923840, 3884253754215628800, 1102040800033347993600, 1892288242221318144000, 5616902226049109065728000]

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

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