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.

A236421 Largest value of x such that x^2 + y^2 = P, where P is the product of the first n primes of the form 4k + 1, and 0 < x < y.

Table of values

n a(n)
1 1
2 4
3 23
4 122
5 743
6 4851
7 35579
8 279644
9 2390953
10 22510892
11 222505867
12 2236298893
13 23344760669
14 248205367341
15 2905133255201
16 35462464074278
17 444339941124303
18 5844308003978966
19 78628682982091847
20 1092345114491353169
21 15331801966256295943

List of values

[1, 4, 23, 122, 743, 4851, 35579, 279644, 2390953, 22510892, 222505867, 2236298893, 23344760669, 248205367341, 2905133255201, 35462464074278, 444339941124303, 5844308003978966, 78628682982091847, 1092345114491353169, 15331801966256295943]

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

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