The second rank moment function N_2(n).

Terms

a(0) =0a(1) =2a(2) =8a(3) =20a(4) =42a(5) =80a(6) =140a(7) =238a(8) =380a(9) =602a(10) =910a(11) =1372a(12) =1996a(13) =2900a(14) =4102a(15) =5790a(16) =8002a(17) =11046a(18) =14980a(19) =20282a(20) =27090a(21) =36092a(22) =47546a(23) =62510a(24) =81374a(25) =105700a(26) =136210a(27) =175084a(28) =223510a(29) =284694