Number of (w,x,y) with all terms in {0,...,n} and 2*max(w,x,y) >= 3*min(w,x,y).

Terms

a(0) =1a(1) =7a(2) =25a(3) =61a(4) =115a(5) =199a(6) =319a(7) =469a(8) =667a(9) =919a(10) =1213a(11) =1573a(12) =2005a(13) =2491a(14) =3061a(15) =3721a(16) =4447a(17) =5275a(18) =6211a(19) =7225a(20) =8359a(21) =9619a(22) =10969a(23) =12457a(24) =14089a(25) =15823a(26) =17713a(27) =19765a(28) =21931a(29) =24271