Number of ways of writing n as a sum of 9 squares.

Terms

a(0) =1a(1) =18a(2) =144a(3) =672a(4) =2034a(5) =4320a(6) =7392a(7) =12672a(8) =22608a(9) =34802a(10) =44640a(11) =60768a(12) =93984a(13) =125280a(14) =141120a(15) =182400a(16) =262386a(17) =317376a(18) =343536a(19) =421344a(20) =557280a(21) =665280a(22) =703584a(23) =800640a(24) =1068384a(25) =1256562a(26) =1234080a(27) =1421184a(28) =1851264a(29) =2034720