a(n) = 2*A276086(n) - A276086(A001065(n)), where A276086 is the primorial base exp-function, and A001065 is the sum of proper divisors of n.

A379494

a(n) = 2*A276086(n) - A276086(A001065(n)), where A276086 is the primorial base exp-function, and A001065 is the sum of proper divisors of n.

Terms

    a(0) =3a(1) =4a(2) =10a(3) =12a(4) =34a(5) =5a(6) =18a(7) =20a(8) =51a(9) =75a(10) =178a(11) =-175a(12) =98a(13) =105a(14) =270a(15) =300a(16) =898a(17) =-500a(18) =498a(19) =-375a(20) =1410a(21) =2175a(22) =4498a(23) =1215a(24) =2495a(25) =3525a(26) =7450a(27) =5625a(28) =22498a(29) =-161

External references