A349926 - OEIS

%I #4 Dec 19 2021 12:08:48

%S 1,-3,-3,-3,-3,6,-3,6,-3,6,-3,15,-3,6,6,6,-3,15,-3,15,6,6,-3,-3,-3,6,

%T 6,15,-3,-3,-3,15,6,6,6,-3,-3,6,6,-3,-3,-3,-3,15,15,6,-3,-21,-3,15,6,

%U 15,-3,-3,6,-3,6,6,-3,-39,-3,6,15,-12,6,-3,-3,15,6,-3

%N Dirichlet g.f.: Product_{k>=2} (1 - 3 * k^(-s)).

%Y Cf. A114592, A292128, A339702, A349925.

%K sign

%O 1,2

%A _Ilya Gutkovskiy_, Dec 05 2021