Indices of the primorial numbers in A098550.

A253590

Indices of the primorial numbers in A098550.

Terms

    a(0) =1a(1) =2a(2) =10a(3) =39a(4) =229a(5) =2484a(6) =31775a(7) =532977a(8) =10038368a(9) =229479450

External references