Related to representation as sums of squares.

Terms

a(0) =1a(1) =20a(2) =74a(3) =24a(4) =157a(5) =124a(6) =478a(7) =1480a(8) =1198a(9) =3044a(10) =480a(11) =184a(12) =2351a(13) =1720a(14) =3282a(15) =5728a(16) =2480a(17) =1776a(18) =10326a(19) =9560a(20) =8886a(21) =9188a(22) =11618a(23) =23664a(24) =16231a(25) =23960a(26) =11686a(27) =9176a(28) =60880a(29) =16876