Number of ordered triples (w,x,y) with all terms in {-n, ..., -1, 1, ..., n} and 4w + x + y > 0.

Terms

a(0) =0a(1) =4a(2) =31a(3) =105a(4) =252a(5) =492a(6) =851a(7) =1353a(8) =2024a(9) =2884a(10) =3959a(11) =5273a(12) =6852a(13) =8716a(14) =10891a(15) =13401a(16) =16272a(17) =19524a(18) =23183a(19) =27273a(20) =31820a(21) =36844a(22) =42371a(23) =48425a(24) =55032a(25) =62212a(26) =69991a(27) =78393a(28) =87444a(29) =97164