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

Terms

a(0) =1a(1) =1a(2) =7a(3) =27a(4) =98a(5) =323a(6) =1085a(7) =3471a(8) =10998a(9) =33874a(10) =102737a(11) =305849a(12) =897899a(13) =2597822a(14) =7423408a(15) =20957775a(16) =58524868a(17) =161741013a(18) =442705279a(19) =1200718351a(20) =3228796864a(21) =8611973548a(22) =22793714865a(23) =59887897679a(24) =156252738062a(25) =404964879419