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 A214983 #9 Feb 23 2018 10:49:39
%S A214983 1,2,6,16,51,195,932,5651,43641,428905,5362388,85303080,1726416461,
%T A214983 44444215422,1455335603434,60619535173748,3211914908993651,
%U A214983 216474718772864071,18558435268379931580,2023812522812259857355
%N A214983 Antidiagonal sums of the array A028412.
%H A214983 Clark Kimberling, <a href="/A214983/b214983.txt">Table of n, a(n) for n = 1..100</a>
%F A214983 Sum{F(m*(n+1-m))/F(m), m = 1,2,...,n}, where F = A000045 (Fibonacci numbers)
%e A214983 a(1) = 1
%e A214983 a(2) = 1 + 1
%e A214983 a(3) = 2 + 3 + 1
%t A214983 (See A028412.)
%Y A214983 Cf. A000045, A028412.
%K A214983 nonn
%O A214983 1,2
%A A214983 _Clark Kimberling_, Oct 28 2012