1,4

Listed terms are = 1 or are primes.

(PARI) a(n)=if(n<0, 0, s=1; while(prime(s)<s*numdiv(s*n), s++); s)

Sequence in context: A146530 A057867 A075871 this_sequence A036200 A157747 A139649

Adjacent sequences: A074808 A074809 A074810 this_sequence A074812 A074813 A074814

more,nonn

Benoit Cloitre (benoit7848c(AT)orange.fr), Sep 08 2002