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.
%I A290179 #13 Mar 07 2019 17:51:35 %S A290179 1,1,5,220,143842,3812606760,3100526225748168, %T A290179 166067393340668215090464,385094129557861603998569599769808, %U A290179 77982538436250653791038197809234977272470080,2745781888570437969210153614136500296784874421242232818048 %N A290179 Permanent of the Vandermonde matrix of the first n prime numbers. %H A290179 Alois P. Heinz, <a href="/A290179/b290179.txt">Table of n, a(n) for n = 0..22</a> %H A290179 Wikipedia, <a href="https://en.wikipedia.org/wiki/Permanent_(mathematics)">Permanent (mathematics)</a> %H A290179 Wikipedia, <a href="https://en.wikipedia.org/wiki/Vandermonde_matrix">Vandermonde matrix</a> %e A290179 a(3) = Permanent([1, 2, 4; 1, 3, 9; 1, 5, 25]) = 220. %p A290179 with(LinearAlgebra): %p A290179 a:= n-> `if`(n=0, 1, Permanent(VandermondeMatrix([ithprime(i)$i=1..n]))): %p A290179 seq(a(n), n=0..12); %Y A290179 Cf. A000040, A080358. %K A290179 nonn %O A290179 0,3 %A A290179 _Alois P. Heinz_, Jul 23 2017