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

Terms

a(0) =0a(1) =4a(2) =16a(3) =44a(4) =92a(5) =168a(6) =276a(7) =424a(8) =616a(9) =860a(10) =1160a(11) =1524a(12) =1956a(13) =2464a(14) =3052a(15) =3728a(16) =4496a(17) =5364a(18) =6336a(19) =7420a(20) =8620a(21) =9944a(22) =11396a(23) =12984a(24) =14712a(25) =16588a(26) =18616a(27) =20804a(28) =23156a(29) =25680