Expansion of Product_{k>=1} 1/(1 - x^k)^(k*(3*k+1)/2).

Terms

a(0) =1a(1) =2a(2) =10a(3) =33a(4) =110a(5) =332a(6) =997a(7) =2829a(8) =7889a(9) =21299a(10) =56400a(11) =146028a(12) =371681a(13) =929498a(14) =2290296a(15) =5562369a(16) =13336036a(17) =31583177a(18) =73957845a(19) =171342592a(20) =393018517a(21) =893000610a(22) =2011039286a(23) =4490680381a(24) =9947577333a(25) =21867539862a(26) =47721817473a(27) =103420870299a(28) =222641160569