a(n) = Sum_{i+j<=m+1} t_i * t_j, where t_1 < ... < t_m are the totatives of n.

Terms

a(0) =1a(1) =1a(2) =5a(3) =7a(4) =35a(5) =11a(6) =126a(7) =70a(8) =177a(9) =90a(10) =715a(11) =142a(12) =1365a(13) =357a(14) =680a(15) =876a(16) =3876a(17) =645a(18) =5985a(19) =1300a(20) =2856a(21) =2255a(22) =12650a(23) =1916a(24) =11675a(25) =4446a(26) =11061a(27) =5362a(28) =31465a(29) =3260