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) =0a(1) =1a(2) =2a(3) =3a(4) =10a(5) =17a(6) =24a(7) =43a(8) =62a(9) =81a(10) =118a(11) =155a(12) =192a(13) =253a(14) =314a(15) =375a(16) =466a(17) =557a(18) =648a(19) =775a(20) =902a(21) =1029a(22) =1198a(23) =1367a(24) =1536a(25) =1753a(26) =1970a(27) =2187a(28) =2458a(29) =2729