Number of intersections of at least four edges in a cube of n X n X n smaller cubes.

Terms

a(0) =0a(1) =7a(2) =32a(3) =81a(4) =160a(5) =275a(6) =432a(7) =637a(8) =896a(9) =1215a(10) =1600a(11) =2057a(12) =2592a(13) =3211a(14) =3920a(15) =4725a(16) =5632a(17) =6647a(18) =7776a(19) =9025a(20) =10400a(21) =11907a(22) =13552a(23) =15341a(24) =17280a(25) =19375a(26) =21632a(27) =24057a(28) =26656a(29) =29435