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 A346592 #8 Aug 01 2021 17:16:31
%S A346592 2,3,5,7,10,11,22,35,45,49,51,77,123,143,269,419,429,765,1011,1395,
%T A346592 1989,2165,3335,3827,7179,9005,18010,36020,41453,82906,92099,184198,
%U A346592 268509,272767,469347,563273,1126546,1224197,2172433,2303171,2825329,5650658,9295309,10741519
%N A346592 Numbers k such that A006577(k^2) sets a new record.
%o A346592 (PARI) a6577(n0)={my(n=n0,k=0);while(n>1,k++;n=if(n%2,3*n+1,n/2));k};
%o A346592 a346592(limit)={msteps=0;for(k=1,limit,my(m=a6577(k^2));if(m>msteps,print1(k,", ");msteps=m))};
%o A346592 a346592(1500000)
%Y A346592 Cf. A006577, A006877, A244638, A346591, A346593.
%K A346592 nonn
%O A346592 1,1
%A A346592 _Hugo Pfoertner_, Jul 28 2021