proposed
approved
proposed
approved
editing
proposed
5, 55, 935, 21505, 623645, 25569445, 1201763915, 63693487495, 3757915762205, 266812019116555, 22145397586674065, 1970940385213991785, 199064978906613170285, 21299952743007609220495, 2406894659959859841915935, 315303200454741639290987485
a(3) = 5*11*17 = 935.
(PARI) lista(nn) = {pp = 1; for (n = 1, nn, p = prime(n); if (Mod(p, 6) == -1, pp *= p; print1(pp, ", ")); ); } \\ Michel Marcus, Sep 08 2013
More terms from Michel Marcus, Sep 08 2013
approved
editing
_Henry Bottomley (se16(AT)btinternet.com), _, Aug 11 2000
Product of first n primes of form 6k-1.
5, 55, 935, 21505, 623645, 25569445, 1201763915, 63693487495, 3757915762205, 266812019116555, 22145397586674065, 1970940385213991785, 199064978906613170285, 21299952743007609220495
1,1
a(3)=5*11*17=935
nonn,easy
Henry Bottomley (se16(AT)btinternet.com), Aug 11 2000
More terms from Larry Reeves (larryr(AT)acm.org), Oct 06 2000
approved