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

Terms

a(0) =0a(1) =4a(2) =32a(3) =108a(4) =250a(5) =492a(6) =854a(7) =1360a(8) =2021a(9) =2885a(10) =3965a(11) =5285a(12) =6849a(13) =8719a(14) =10901a(15) =13419a(16) =16270a(17) =19530a(18) =23198a(19) =27298a(20) =31820a(21) =36854a(22) =42392a(23) =48458a(24) =55035a(25) =62227a(26) =70019a(27) =78435a(28) =87451a(29) =97185