%I #5 May 13 2021 13:48:51
%S 1,7,49,371,2401,17150,117649,826028,5766026,40370414,282475249,
%T 1977462571,13841287201,96889833950,678223190498,4747567343554,
%U 33232930569601,232630555172932,1628413597910449,11398895468739163,79792266303376802,558545866060610750
%N Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^(7^(k-1)).
%Y Cf. A001055, A050367, A329800, A344247, A344248, A344249, A344250, A344252, A344253.
%K nonn
%O 1,2
%A _Ilya Gutkovskiy_, May 12 2021