60010

Appears in sequences

• a(n) = smallest m > 0 such that there are no primes between p*m and p*(m+1) inclusive where p is the n-th prime.at n=30A174741
• Consider a number k with m decimal digits, the prefix p of length m-1 and the suffix s of length m-1. The sequence lists the numbers k such that sigma(k) = sigma(p)*sigma(s) where sigma(x) is the sum of the divisors of x.at n=29A244313
• Number of regions in a "cross" of width 3 and height n (see Comments for definition).at n=22A331455