Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #8 Aug 01 2021 17:16:31
%S 2,3,5,7,10,11,22,35,45,49,51,77,123,143,269,419,429,765,1011,1395,
%T 1989,2165,3335,3827,7179,9005,18010,36020,41453,82906,92099,184198,
%U 268509,272767,469347,563273,1126546,1224197,2172433,2303171,2825329,5650658,9295309,10741519
%N Numbers k such that A006577(k^2) sets a new record.
%o (PARI) a6577(n0)={my(n=n0,k=0);while(n>1,k++;n=if(n%2,3*n+1,n/2));k};
%o a346592(limit)={msteps=0;for(k=1,limit,my(m=a6577(k^2));if(m>msteps,print1(k,", ");msteps=m))};
%o a346592(1500000)
%Y Cf. A006577, A006877, A244638, A346591, A346593.
%K nonn
%O 1,1
%A _Hugo Pfoertner_, Jul 28 2021