Largest coefficient in expansion of Product_{i=1..n} (1 + q^i + q^(2i)).

Terms

a(0) =1a(1) =2a(2) =3a(3) =7a(4) =15a(5) =36a(6) =87a(7) =217a(8) =549a(9) =1423a(10) =3735a(11) =9911a(12) =26513a(13) =71581a(14) =194681a(15) =532481a(16) =1464029a(17) =4045117a(18) =11225159a(19) =31268577a(20) =87404465a(21) =245101771a(22) =689323849a(23) =1943817227a(24) =5494808425a(25) =15568077235a(26) =44200775239a(27) =125739619467a(28) =358347118257