A068326 a(n) = Product_{k=1..n} A031974(k).

1, 11, 1221, 13566531, 15073921825941, 167488020286558453130451, 186097800318379671476024826838541061, 2067753336870885217944964707274937180441685906828771, 2297503707634316908597988192875387398496877151223641424395368232574581

Offset: 0

Author

Jani Melik, Feb 27 2002

Keywords

• nonn
• base

Crossrefs

Cf. A031974.

Programs

PARI

a(n) = prod(k=1, n, (10^prime(k) - 1)/9); \\ Michel Marcus, Jan 04 2021

Extensions

More terms from Jason Earls, May 19 2002