Theta series of face-centered cubic (f.c.c.) lattice.

Terms

a(0) =1a(1) =12a(2) =6a(3) =24a(4) =12a(5) =24a(6) =8a(7) =48a(8) =6a(9) =36a(10) =24a(11) =24a(12) =24a(13) =72a(14) =0a(15) =48a(16) =12a(17) =48a(18) =30a(19) =72a(20) =24a(21) =48a(22) =24a(23) =48a(24) =8a(25) =84a(26) =24a(27) =96a(28) =48a(29) =24