Number of rods required to make a 3-D cube of side length n.

Terms

a(0) =0a(1) =12a(2) =54a(3) =144a(4) =300a(5) =540a(6) =882a(7) =1344a(8) =1944a(9) =2700a(10) =3630a(11) =4752a(12) =6084a(13) =7644a(14) =9450a(15) =11520a(16) =13872a(17) =16524a(18) =19494a(19) =22800a(20) =26460a(21) =30492a(22) =34914a(23) =39744a(24) =45000a(25) =50700a(26) =56862a(27) =63504a(28) =70644a(29) =78300