30839

Properties

Appears in sequences

• Number of rooted trees with n nodes with every leaf at height 9.at n=20A048814
• Numbers k such that (k-1)! + k is prime.at n=8A092791
• Larger prime in pair prime(k) +/- k for some k.at n=37A107637
• a(n) = 4*n^3 - 3*n^2 + 2*n - 1.at n=19A131464
• 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, 1), (-1, 1, 0), (1, -1, -1), (1, 0, 1)}.at n=10A148628
• 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, 1), (-1, 0, 1), (-1, 1, 0), (1, -1, -1), (1, 0, 1)}.at n=10A148629
• Primes p such that (p-1)*p*(p+1)-p-2 and (p-1)*p*(p+1)+p+2 are primes.at n=31A154942
• Minimum of the greatest prime factors of (i^prime(n)-1)/(i-1), when i runs through all integers in [2, prime(n)].at n=6A247229
• Largest prime factor of 6^n - 1.at n=16A274907
• Primes that can be generated by the concatenation in base 4, in descending order, of two consecutive integers read in base 10.at n=18A287303
• The first prime of 8 consecutive primes a, b, c, d, e, f, g, h such that a + g = c + e and b + h = d + f.at n=29A292618
• Primes p, not safe primes, such that the smallest factor of (2^(p-1)-1) / 3 is equal to p.at n=37A360827
• Primes having only {0, 3, 8, 9} as digits.at n=34A386069
• Prime numbersat n=3324