%I #15 May 01 2020 12:10:56
%S 1,2,33,129,1081,2049,9233,33793,458753,2015233,3932161,33554945,
%T 188743681
%N Positions of records in A334090; After 1, positions of record jumps upward in A064097.
%C Terms a(3) .. a(11) are squarefree semiprimes, but 33554945 = 5 * 47 * 142787.
%C Records themselves are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13.
%o (PARI)
%o A064097(n) = if(1==n,0,1+A064097(n-(n/vecmin(factor(n)[,1]))));
%o m=0; prev=-1; for(n=1,2^26,t=A064097(n); if((t-prev)>m,m=t-prev;print1(n,", ")); prev=t);
%Y Cf. A064097, A334090.
%K nonn,more
%O 1,2
%A _Antti Karttunen_, Apr 18 2020
%E a(13) from _Jinyuan Wang_, May 01 2020