OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
EXAMPLE
For n = 11: the quotient of the least number whose sigma is divisible by the 11th prime is A097018(11) = 16, sigma(16) = 31, and prime(11) = 31, so, a(11) = 31/31 = 1.
PROG
(PARI) list(len) = {my(v = vector(len), p = primes(len), k = 1, c = 0, s); while(c < len, s = sigma(k); for(i = 1, len, if(v[i] == 0 && !(s % p[i]), c++; v[i] = s/p[i])); k++); v; } \\ Amiram Eldar, Feb 15 2025
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Aug 23 2004
STATUS
approved