%I A028343
%S A028343 1,1,1,1,1,41,131,1499,4159,10639,100871,4142249,111459041,
%T A028343 1127459321,1797229589,185028952109,706529394689,29136228245279,
%U A028343 547852336663409,7139784702100049,195178627579232449
%V A028343 1,-1,-1,1,-1,41,-131,1499,-4159,10639,100871,4142249,-111459041,
%W A028343 1127459321,1797229589,-185028952109,706529394689,29136228245279,
%X A028343 -547852336663409,7139784702100049,-195178627579232449
%N A028343 Expansion of prod( (1-x^i)^(1/i), i = 1..infinity); also of exp(- sum( 
               d(n)*x^n /n, n = 1..infinity)) where d is number of divisors function.
%Y A028343 Sequence in context: A142290 A013643 A142333 this_sequence A165816 A142449 
               A044373
%Y A028343 Adjacent sequences: A028340 A028341 A028342 this_sequence A028344 A028345 
               A028346
%K A028343 sign
%O A028343 0,6
%A A028343 Jeffrey Shallit (shallit(AT)graceland.uwaterloo.ca)