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

Terms

a(0) =0a(1) =1a(2) =6a(3) =17a(4) =37a(5) =68a(6) =113a(7) =174a(8) =254a(9) =355a(10) =480a(11) =631a(12) =811a(13) =1022a(14) =1267a(15) =1548a(16) =1868a(17) =2229a(18) =2634a(19) =3085a(20) =3585a(21) =4136a(22) =4741a(23) =5402a(24) =6122a(25) =6903a(26) =7748a(27) =8659a(28) =9639a(29) =10690