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a(n) is the number of divisors of A000058(n) (Sylvester's sequence).
1

%I #6 Nov 05 2023 22:05:32

%S 2,2,2,2,4,2,16,16,8,32,16

%N a(n) is the number of divisors of A000058(n) (Sylvester's sequence).

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Sylvester%27s_sequence#Divisibility_and_factorizations">Sylvester's sequence: Divisibility and factorizations</a>.

%F a(n) = sigma0(A000058(n)) = A000005(A000058(n)).

%Y Cf. A000058, A000005, A091335, A367131.

%K nonn,more

%O 0,1

%A _Sean A. Irvine_, Nov 05 2023