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 A022913 #6 May 28 2019 12:11:41 %S A022913 1,4,13,30,63,124,233,431,798,1480,2772,5232,9964,19120,36931,71711, %T A022913 139843,273633,536868,1055596,2079074,4100581,8096797,16002508, %U A022913 31652202,62648233,124068507 %N A022913 Arrange the nontrivial binomial coefficients C(m,k) (2 <= k <= m-2) in increasing order; record the positions of the central binomial coefficients. %Y A022913 Cf. A022911, A022912. %K A022913 nonn,more %O A022913 1,2 %A A022913 _Clark Kimberling_ %E A022913 Terms corrected by _Sean A. Irvine_, May 27 2019