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Erroneous version of A009287 (the 2 should be omitted).
0

%I #5 Nov 19 2022 21:06:49

%S 2,3,4,6,12,60,5040,293318625600

%N Erroneous version of A009287 (the 2 should be omitted).

%C Let b(n) = min k: d^k(n) = 2, where d(n) is the number of divisors of n. Then the given values correctly identify records of b(n). But see A251483 for a slight variant with more values.

%K dead

%O 0,1