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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.

A323739 a(n) is the number of residues modulo (4*primorial(n)) of the squares of primes greater than or equal to prime(n+1).

Table of values

n a(n)
0 2
1 1
2 1
3 2
4 6
5 30
6 180
7 1440
8 12960
9 142560
10 1995840
11 29937600
12 538876800
13 10777536000
14 226328256000
15 5205549888000
16 135344297088000
17 3924984615552000
18 117749538466560000
19 3885734769396480000
20 136000716928876800000
21 4896025809439564800000
22 190945006568143027200000

List of values

[2, 1, 1, 2, 6, 30, 180, 1440, 12960, 142560, 1995840, 29937600, 538876800, 10777536000, 226328256000, 5205549888000, 135344297088000, 3924984615552000, 117749538466560000, 3885734769396480000, 136000716928876800000, 4896025809439564800000, 190945006568143027200000]

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

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