Least linear combinations of phi(n) and sigma(n) are multiple.

Terms

a(0) =2a(1) =12a(2) =42a(3) =90a(4) =110a(5) =152a(6) =171a(7) =208a(8) =231a(9) =336a(10) =408a(11) =476a(12) =506a(13) =765a(14) =783a(15) =840a(16) =1242a(17) =1380a(18) =1584a(19) =1911a(20) =2120a(21) =2162a(22) =2528a(23) =2604a(24) =2688a(25) =2706a(26) =2720a(27) =2970a(28) =3162a(29) =3172