Number of nonnegative solutions to (x_1)^2 + (x_2)^2 + ... + (x_10)^2 <= n.

Terms

a(0) =1a(1) =11a(2) =56a(3) =176a(4) =396a(5) =738a(6) =1308a(7) =2268a(8) =3618a(9) =5258a(10) =7449a(11) =10689a(12) =14889a(13) =19609a(14) =25369a(15) =33289a(16) =43154a(17) =53774a(18) =65739a(19) =81339a(20) =100671a(21) =121221a(22) =143421a(23) =171501a(24) =205701a(25) =241283a(26) =278678a(27) =324398a(28) =378998a(29) =435968