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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.

A186720 As p runs through the primes, sequence gives denominator of Sum_{k=1..p-1} 1/k^2.

Table of values

n a(n)
1 1
2 4
3 144
4 3600
5 1270080
6 153679680
7 519437318400
8 150117385017600
9 221193371393280
10 6450247552370862240000
11 5424658191543895143840000
12 20852386088294732932920960000
13 28546916554875489385168794240000
14 6855338104106528236638391873920000
15 12675520154492970709544386574878080000

List of values

[1, 4, 144, 3600, 1270080, 153679680, 519437318400, 150117385017600, 221193371393280, 6450247552370862240000, 5424658191543895143840000, 20852386088294732932920960000, 28546916554875489385168794240000, 6855338104106528236638391873920000, 12675520154492970709544386574878080000]

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

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