Number of (w,x,y) with all terms in {0,...,n} and w != min(|w-x|, |x-y|, |y-w|).

Terms

a(0) =0a(1) =4a(2) =18a(3) =48a(4) =98a(5) =178a(6) =290a(7) =442a(8) =640a(9) =890a(10) =1196a(11) =1568a(12) =2008a(13) =2524a(14) =3122a(15) =3808a(16) =4586a(17) =5466a(18) =6450a(19) =7546a(20) =8760a(21) =10098a(22) =11564a(23) =13168a(24) =14912a(25) =16804a(26) =18850a(27) =21056a(28) =23426a(29) =25970