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 A323475 #18 Feb 08 2019 05:38:17 %S A323475 1,1,1,2,3,5,9,15,24,39,62,98,156,247,390,611,953,1485,2314,3613,5655, %T A323475 8877,13970,22029,34774,54904,86640,136571,214992,338008,530886, %U A323475 833391,1308336,2055290,3232624,5092985,8040450,12722620,20179052 %N A323475 Number of new terms added at n-th generation of A306211. %C A323475 a(0)=1 followed by first differences of A306215. %H A323475 Benjamin Chaffin, <a href="/A323475/b323475.txt">Table of n, a(n) for n = 0..64</a> %Y A323475 Cf. A306211, A306215. %K A323475 nonn %O A323475 0,4 %A A323475 _N. J. A. Sloane_, Jan 29 2019