38219

Properties

Appears in sequences

• Primes of the form ((p+1)/2)^2+((p-1)/2), where p is prime.at n=33A163419
• Second entry in row n of triangle in A169950.at n=30A169952
• Primes of form n^4 - n^2 - 1.at n=7A174822
• Concatenate n-th composite number with concatenation of its prime factors in ascending order.at n=24A245315
• Primes of the form sigma(n) + sigma(n)^2 - 1.at n=37A259190
• Emirps that can be written as p*q+p+q where p and q are emirps.at n=13A352249
• Number of integer partitions of n where the parts do not have the same median as the distinct parts.at n=41A360244
• Numbers formed by concatenating n with the distinct prime factors of n, left to right, smallest factors to largest, with a(1) = 10.at n=37A367918
• Primes that are the sum of some number of consecutive prime squares.at n=25A376916
• Prime numbersat n=4034