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 A025133 #8 Aug 10 2019 04:21:00 %S A025133 9,256,5825,117561,2229206,40645536,721957977,12587900665, %T A025133 216494284886,3684700444921,62202196684966,1043201004995254, %U A025133 17402695775329724,289035985511398816,4782824895703150121,78896686234320906753,1297987090781736899270,21304819716551897181561 %N A025133 4th elementary symmetric function of C(n,0), C(n,1), ..., C(n,n). %p A025133 SymmPolyn := proc(L::list,n::integer) %p A025133 local c,a,sel; %p A025133 a :=0 ; %p A025133 sel := combinat[choose](nops(L),n) ; %p A025133 for c in sel do %p A025133 a := a+mul(L[e],e=c) ; %p A025133 end do: %p A025133 a; %p A025133 end proc: %p A025133 A025133 := proc(n) %p A025133 [seq(binomial(n,i),i=0..n)] ; %p A025133 SymmPolyn(%,4) ; %p A025133 end proc: # _R. J. Mathar_, Sep 23 2016 %K A025133 nonn %O A025133 3,1 %A A025133 _Clark Kimberling_ %E A025133 a(10) corrected and more terms from _Sean A. Irvine_, Aug 10 2019