Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+x+y>2.

Terms

a(0) =0a(1) =1a(2) =11a(3) =57a(4) =160a(5) =344a(6) =633a(7) =1051a(8) =1622a(9) =2370a(10) =3319a(11) =4493a(12) =5916a(13) =7612a(14) =9605a(15) =11919a(16) =14578a(17) =17606a(18) =21027a(19) =24865a(20) =29144a(21) =33888a(22) =39121a(23) =44867a(24) =51150a(25) =57994a(26) =65423a(27) =73461a(28) =82132a(29) =91460