Least integer with A000203(a(n)) = A002191(n), where A002191 = range of the sum-of-divisors function A000203.

A002192

Least integer with A000203(a(n)) = A002191(n), where A002191 = range of the sum-of-divisors function A000203.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =5a(4) =4a(5) =7a(6) =6a(7) =9a(8) =13a(9) =8a(10) =10a(11) =19a(12) =14a(13) =12a(14) =29a(15) =16a(16) =21a(17) =22a(18) =37a(19) =18a(20) =27a(21) =20a(22) =43a(23) =33a(24) =34a(25) =28a(26) =49a(27) =24a(28) =61a(29) =32

External references