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%I #14 Jan 27 2019 14:08:51
%S 0,2,5,9,14,16,19,25,28,49,576,46221064723759104
%N a(0)=0, a(1)=2. For n >=2, a(n) = the smallest integer >= a(n-1)+2 with exactly (a(n-1)-a(n-2)) divisors.
%C a(n)-a(n-1) = number of divisors of a(n+1) = A161768(n).
%Y Cf. A000005, A161768.
%K nonn
%O 0,2
%A _Leroy Quet_, Jun 18 2009
%E a(11) from _Amiram Eldar_, Jan 27 2019
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