cp's OEIS Frontend

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.

A234532 Pentagonal numbers penta(n) = (p + q + r)/3 which are the arithmetic mean of three consecutive primes such that p < penta(n) < q < r.

Table of values

n a(n)
1 9087
2 29751
3 291501
4 602617
5 1505505
6 1778337
7 1941997
8 2137857
9 3032415
10 4629695
11 5016947
12 5038917
13 7837551
14 8030737
15 9328807
16 11935651
17 19158427
18 35616757
19 40964001
20 41073817
21 42594697
22 44289817
23 56141827
24 59267551

List of values

[9087, 29751, 291501, 602617, 1505505, 1778337, 1941997, 2137857, 3032415, 4629695, 5016947, 5038917, 7837551, 8030737, 9328807, 11935651, 19158427, 35616757, 40964001, 41073817, 42594697, 44289817, 56141827, 59267551]

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

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