%I #10 Jan 30 2022 02:44:47
%S 5,3,75,889599926394171,
%T 1503602507542081191567576988391237674543140475,
%U 83276272814888934795930294359718745998045560658956598133222411254239724160031227
%N a(n) is the smallest odd number k > 1 whose Collatz trajectory contains n odd terms other than 1, all of which are < 2k.
%C a(7) is too large to list here.
%Y Cf. A006370.
%K nonn
%O 1,1
%A _Jon E. Schoenfield_, Dec 19 2021
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