Glaisher's function J(n) (18 squares version).

Terms

a(0) =1a(1) =44a(2) =432a(3) =-1136a(4) =610a(5) =-5568a(6) =6048a(7) =11456a(8) =-3423a(9) =26840a(10) =-79920a(11) =768a(12) =-5470a(13) =-77952a(14) =263520a(15) =61696a(16) =73090a(17) =-150612a(18) =-84240a(19) =-692960a(20) =-139776a(21) =1030080a(22) =-1025568a(23) =1410048a(24) =-18525a(25) =-240680a(26) =1355616a(27) =10752a(28) =-128222a(29) =-3396480