A076341(A000290(n)), imaginary part of squares mapped as defined in A076340, A076341.

Terms

a(0) =0a(1) =0a(2) =-8a(3) =0a(4) =8a(5) =-32a(6) =-16a(7) =0a(8) =-240a(9) =32a(10) =-24a(11) =-128a(12) =24a(13) =-64a(14) =0a(15) =0a(16) =32a(17) =-960a(18) =-40a(19) =128a(20) =-744a(21) =-96a(22) =-48a(23) =-512a(24) =240a(25) =96a(26) =-4888a(27) =-256a(28) =56a(29) =0