309375

Appears in sequences

• Smallest natural number k such that periodic part of 1/k is n, or 0 if no such k exists.at n=23A037207
• Smallest natural number k such that periodic part of 1/k is n, or 0 if no such k exists.at n=32A037207
• Smallest natural number k such that periodic part of 1/k is the prime p(n), or 0 if no such k exists.at n=8A037218
• a(n) = binomial(n+8, 8)*5^n.at n=4A140346
• Numbers that divide the concatenation of their aliquot divisors, in ascending order.at n=17A240265
• Integers k such that k and k+1 are products of 8 primes.at n=7A268469