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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.

A239502 (Round(q^prime(n)) - 1)/prime(n), where q is the tribonacci constant (A058265).

Table of values

n a(n)
3 4
4 10
5 74
6 212
7 1856
8 5618
9 53114
10 1630932
11 5161442
12 167427844
13 1729192432
14 5577731626
15 58401766802
16 2005139696964
17 69737304018266
18 228184540445268
19 8043367476888770
20 86866463049858250
21 285815985033409648
22 10225367934387562098
23 111384745483589787826

List of values

[4, 10, 74, 212, 1856, 5618, 53114, 1630932, 5161442, 167427844, 1729192432, 5577731626, 58401766802, 2005139696964, 69737304018266, 228184540445268, 8043367476888770, 86866463049858250, 285815985033409648, 10225367934387562098, 111384745483589787826]

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

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