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

Terms

a(0) =0a(1) =0a(2) =0a(3) =2a(4) =6a(5) =14a(6) =26a(7) =44a(8) =68a(9) =100a(10) =140a(11) =190a(12) =250a(13) =322a(14) =406a(15) =504a(16) =616a(17) =744a(18) =888a(19) =1050a(20) =1230a(21) =1430a(22) =1650a(23) =1892a(24) =2156a(25) =2444a(26) =2756a(27) =3094a(28) =3458a(29) =3850