Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2<x^2+y^2.

Terms

a(0) =0a(1) =1a(2) =7a(3) =22a(4) =51a(5) =97a(6) =166a(7) =263a(8) =391a(9) =554a(10) =756a(11) =1004a(12) =1303a(13) =1653a(14) =2061a(15) =2530a(16) =3068a(17) =3677a(18) =4362a(19) =5126a(20) =5973a(21) =6912a(22) =7942a(23) =9071a(24) =10304a(25) =11640a(26) =13087a(27) =14649a(28) =16333a(29) =18142