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 A065569 #16 Mar 18 2025 16:06:19
%S A065569 2,2,2,3,2,2,2,3,2,3,2,4,3,2,2,3,2,5,4,3,2,3,2,3,2,3,2,3,2,2,14,5,4,3,
%T A065569 2,5,4,3,2,3,2,5,4,3,2,3,2,5,4,3,2,6,8,5,4,3,2,3,2,4,3,2,4,3,2,5,4,3,
%U A065569 2,3,2,7,8,5,4,3,2,3,2,3,2,6,10,5,4,3,2,6,6,6,15,5,4,3,2,5,4,3,2,3,2,5,4
%N A065569 Smallest k such that omega(n+k) = omega(k).
%H A065569 Harry J. Smith, <a href="/A065569/b065569.txt">Table of n, a(n) for n=1..1000</a>
%o A065569 (PARI) a(n)= {for(k=1, oo, if(omega(k)==omega(n+k), return(k)))}
%Y A065569 Cf. A001221, A065925.
%K A065569 nonn
%O A065569 1,1
%A A065569 _Jason Earls_, Nov 30 2001