106681

Properties

Appears in sequences

• Doubly balanced primes: primes which are averages of both their immediate and their second neighbors.at n=9A051795
• Primes with 23 as smallest positive primitive root.at n=30A061335
• Duplicate of A051795.at n=9A081416
• Emirps which remain primes when rotated by 180 degrees on a digital clock display.at n=22A159064
• 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 27.at n=13A159227
• Primes of the form x^2 + 18480*y^2.at n=32A173274
• Starting at n, a(n) is the total number of moves made to the left according to the following rules. On the k-th step (k=1,2,3,...) move a distance of k in the direction of zero. If the number landed on has been landed on before, move a distance of k away from zero instead.at n=38A324661
• Number of integer partitions of n with unsortable prime factors.at n=51A326332
• Prime numbersat n=10167