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%I #5 May 14 2021 06:27:16
%S 1,7,49,364,2401,17150,117649,825979,5765977,40370414,282475249,
%T 1977462228,13841287201,96889833950,678223190498,4747567340635,
%U 33232930569601,232630555172589,1628413597910449,11398895468722356,79792266303376802,558545866060610750,3909821048582988049,27368747353968794263
%N Dirichlet g.f.: Product_{k>=2} (1 + k^(-s))^(7^(k-1)).
%Y Cf. A045778, A050368, A344251, A344265, A344266, A344267, A344268, A344269, A344271.
%K nonn
%O 1,2
%A _Ilya Gutkovskiy_, May 13 2021
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