L.g.f.: log( Sum_{n>=0} x^(n^2) ), the log of the characteristic function of the squares.

Terms

a(0) =1a(1) =-1a(2) =1a(3) =3a(4) =-4a(5) =5a(6) =-6a(7) =3a(8) =10a(9) =-16a(10) =23a(11) =-27a(12) =14a(13) =6a(14) =-34a(15) =83a(16) =-101a(17) =86a(18) =-37a(19) =-72a(20) =204a(21) =-309a(22) =346a(23) =-243a(24) =-29a(25) =454a(26) =-908a(27) =1214a(28) =-1130a(29) =470