54133

Properties

Appears in sequences

• Maxima of the rows of the triangle A259095.at n=51A005577
• Concatenation of prime p and nextprime(p) is prime -> cycles of 2 steps possible.at n=17A036339
• a(n) = Sum_{d|n} p(d), where p(d) = A000041 = number of partitions of d.at n=41A047968
• a(n) is smallest prime > 10*a(n-1), a(1) = 5.at n=4A065534
• Number of polyominoes consisting of 6 regular unit n-gons.at n=25A103472
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (-1, 1, 1), (0, -1, 0), (0, 0, 1), (1, 1, -1)}.at n=10A148476
• Primes of the form 5*x^2 - 2*y^2, where x and y are successive natural numbers.at n=21A177077
• Primes p such that p^2 is the concatenation of two k-digit primes where k is half the length of p^2.at n=42A248046
• Primes of the form k*(k+2)/3 - 3, k>2.at n=42A262203
• Primes whose position in the Wythoff array is immediately followed by a prime both in the next column and the next row.at n=26A352537
• Primes that are the sum of the cubes of four primes, not necessarily distinct.at n=41A353249
• Prime numbersat n=5511