130211

Properties

Appears in sequences

• 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, -1, 0), (-1, 0, 0), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.at n=9A149739
• Primes p such that, for p < q < r three consecutive primes, p + 2q + 2r, 2p + q + 2r and 2p + 2q + r are all primes.at n=16A216262
• Primes p such that both prevprime(p^2) - 2 and nextprime(p^2) + 2 are also primes.at n=32A226986
• SanD-68 primes p: such that p+d is also prime and sum of digits A007953(p(p+d)) = d, with d = 68.at n=18A307474
• a(n) is the smallest prime number p in a sequence of n consecutive primes, such that the numbers formed by the last n digits of each prime in the sequence create another sequence of n consecutive prime numbers, all strictly less than p.at n=4A386842
• Prime numbersat n=12178