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

Terms

a(0) =0a(1) =2a(2) =8a(3) =22a(4) =44a(5) =80a(6) =128a(7) =196a(8) =280a(9) =390a(10) =520a(11) =682a(12) =868a(13) =1092a(14) =1344a(15) =1640a(16) =1968a(17) =2346a(18) =2760a(19) =3230a(20) =3740a(21) =4312a(22) =4928a(23) =5612a(24) =6344a(25) =7150a(26) =8008a(27) =8946a(28) =9940a(29) =11020