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.

A228095 Determinant of the p_n X p_n matrix with (i,j)-entry equal to the Legendre symbol ((i^2 + 3*i*j + 3*j^2)/p_n) for all i,j = 0, 1, ..., p_n-1, where p_n is the n-th prime.

Table of values

n a(n)
2 0
3 0
4 -72
5 0
6 9600
7 0
8 23970816
9 0
10 0
11 -8814759178752000000
12 -1217765613534782800527360
13 0
14 2555625991208076641833058304
15 0
16 0
17 0
18 164525463228624478317575381527120287356682240
19 -33094833021317386202938131485140597289779200
20 0

List of values

[0, 0, -72, 0, 9600, 0, 23970816, 0, 0, -8814759178752000000, -1217765613534782800527360, 0, 2555625991208076641833058304, 0, 0, 0, 164525463228624478317575381527120287356682240, -33094833021317386202938131485140597289779200, 0]