22859

Properties

Appears in sequences

• Numerators of the squarefree totient analogs of the harmonic numbers F_n.at n=36A138316
• Primes congruent to 26 mod 59.at n=37A142753
• Primes congruent to 45 mod 61.at n=39A142843
• Number of tilings of a 5 X n rectangle using n pentominoes of shapes V, U, X, N.at n=21A247127
• Lesser of twin prime pairs of the form (40n - 21, 40n - 19).at n=34A250025
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 197", based on the 5-celled von Neumann neighborhood.at n=32A270718
• Primes for which the concatenation of the digits in the even positions and the concatenation of the digits in the odd positions are squares.at n=32A275797
• Prime generating polynomial: a(n) = (4*n - 29)^2 + 58.at n=44A320772
• a(n) is the least prime p = prime(k) such that the next prime with the same last digit as p is prime(k+n).at n=17A340800
• Numbers that cannot be expressed as the sum of one or more numbers without any repeated digits.at n=33A342080
• Primes p whose reverse q is a semiprime, and of p+q and its reverse one is a prime and the other is a semiprime.at n=24A350781
• Primes having only {2, 5, 8, 9} as digits.at n=19A386164
• Prime numbersat n=2552