Expansion of Product_{k>=1} (1 + x^k)^(k*(k+1)*(5*k-2)/6).

Terms

a(0) =1a(1) =1a(2) =8a(3) =34a(4) =114a(5) =411a(6) =1380a(7) =4573a(8) =14650a(9) =45995a(10) =141296a(11) =426364a(12) =1265443a(13) =3698011a(14) =10657134a(15) =30312395a(16) =85183177a(17) =236681860a(18) =650686538a(19) =1771098691a(20) =4775571943a(21) =12762628737a(22) =33821018537a(23) =88909273699a(24) =231945942992a(25) =600700301298