Number of triples (w,x,y) with all terms in {0,...,n} and w < floor((x+y)/3).

Terms

a(0) =0a(1) =0a(2) =3a(3) =11a(4) =25a(5) =48a(6) =82a(7) =128a(8) =189a(9) =267a(10) =363a(11) =480a(12) =620a(13) =784a(14) =975a(15) =1195a(16) =1445a(17) =1728a(18) =2046a(19) =2400a(20) =2793a(21) =3227a(22) =3703a(23) =4224a(24) =4792a(25) =5408a(26) =6075a(27) =6795a(28) =7569a(29) =8400