Number of atoms in cluster of n layers around C_60.

Terms

a(0) =0a(1) =32a(2) =104a(3) =236a(4) =448a(5) =760a(6) =1192a(7) =1764a(8) =2496a(9) =3408a(10) =4520a(11) =5852a(12) =7424a(13) =9256a(14) =11368a(15) =13780a(16) =16512a(17) =19584a(18) =23016a(19) =26828a(20) =31040a(21) =35672a(22) =40744a(23) =46276a(24) =52288a(25) =58800a(26) =65832a(27) =73404a(28) =81536a(29) =90248