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

Terms

a(0) =0a(1) =3a(2) =13a(3) =32a(4) =64a(5) =113a(6) =181a(7) =272a(8) =388a(9) =535a(10) =713a(11) =926a(12) =1180a(13) =1475a(14) =1815a(15) =2204a(16) =2646a(17) =3141a(18) =3695a(19) =4312a(20) =4992a(21) =5741a(22) =6563a(23) =7460a(24) =8432a(25) =9485a(26) =10625a(27) =11850a(28) =13166a(29) =14579