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 A203007 #7 Oct 01 2016 11:55:22
%S A203007 1,3,11,61,518,6974,149574,5151036,285534660,25535107140,
%T A203007 3687959921760,860864908848480,324911938205144160,
%U A203007 198334214378751672000,195840008156732278248000,312839537789862069432264000
%N A203007 (n-1)-st elementary symmetric function of Fibonacci numbers F(2) to F(n).
%C A203007 From _R. J. Mathar_, Oct 01 2016 (Start):
%C A203007 The k-th elementary symmetric functions of F(j), j=2..n+1, form a triangle T(n,k), 0<=k<=n, n>=0:
%C A203007 1
%C A203007 1 1
%C A203007 1 3 2
%C A203007 1 6 11 6
%C A203007 1 11 41 61 30
%C A203007 1 19 129 389 518 240
%C A203007 1 32 376 2066 5575 6974 3120
%C A203007 1 53 1048 9962 48961 124049 149574 65520
%C A203007 1 87 2850 45594 387669 1788723 4367240 5151036 2227680
%C A203007 This here is the first subdiagonal. The diagonal is A003266. The 2nd column is A001911, the 3rd A203245. (End)
%t A203007 f[k_] := Fibonacci[k + 1]; t[n_] := Table[f[k], {k, 1, n}]
%t A203007 a[n_] := SymmetricPolynomial[n - 1, t[n]]
%t A203007 Table[a[n], {n, 1, 16}] (* A203007 *)
%Y A203007 Cf. A000045, A203006.
%K A203007 nonn
%O A203007 1,2
%A A203007 _Clark Kimberling_, Dec 29 2011