Expansion of Product_{k>=1} (1+x^k)^(A002203(k)).

Terms

a(0) =1a(1) =2a(2) =7a(3) =26a(4) =83a(5) =278a(6) =894a(7) =2848a(8) =8947a(9) =27844a(10) =85774a(11) =262090a(12) =794802a(13) =2393874a(14) =7165622a(15) =21327412a(16) =63146545a(17) =186063052a(18) =545783103a(19) =1594268778a(20) =4638773567a(21) =13447773510a(22) =38850645513a(23) =111874844146a(24) =321166890522a(25) =919314145044