Expansion of ((1 + 2 * Sum_{k>=1} q^(k^2))^16 - 1) / 32.

Terms

a(0) =1a(1) =15a(2) =140a(3) =911a(4) =4398a(5) =16436a(6) =49400a(7) =124815a(8) =279557a(9) =582066a(10) =1147332a(11) =2124340a(12) =3692390a(13) =6160008a(14) =10052904a(15) =15910799a(16) =24151410a(17) =35732555a(18) =52543100a(19) =75891378a(20) =106006432a(21) =145588860a(22) =200348520a(23) =272046644a(24) =359002903a(25) =468778746a(26) =615548600a(27) =799793800a(28) =1014602070a(29) =1277001048