1,1

Table of n, a(n) for n=1..10.

Cf. A071576, A164325.

Sequence in context: A120613 A277193 A240728 * A117571 A008474 A111611

Adjacent sequences: A164323 A164324 A164325 * A164327 A164328 A164329

more,nonn

Farideh Firoozbakht, Sep 16 2009

a(10)=240544635660 from Zak Seidov, Sep 21 2009

approved