Number of different values of i^2+j^2+k^2+l^2+m^2 for i,j,k,l,m in [0,n].

Terms

a(0) =1a(1) =6a(2) =18a(3) =38a(4) =66a(5) =99a(6) =147a(7) =201a(8) =262a(9) =332a(10) =411a(11) =498a(12) =601a(13) =702a(14) =819a(15) =946a(16) =1078a(17) =1221a(18) =1375a(19) =1533a(20) =1703a(21) =1882a(22) =2076a(23) =2264a(24) =2479a(25) =2691a(26) =2922a(27) =3159a(28) =3403a(29) =3655