36913

Properties

Appears in sequences

• Numbers k such that (3^k - 1)/2 is prime.at n=12A028491
• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 54.at n=3A031642
• Primes p from A031924 such that A052180(primepi(p)) = 19.at n=25A052235
• Surround numbers of an n X 1 rectangle.at n=14A060633
• Prime(n) and prime(n+4) use the same digits.at n=34A069796
• Primes p such that the differences between the 5 consecutive primes starting with p are (6,4,6,2).at n=7A078963
• Primes which remain prime after one and after two applications of the rotate-and-add operation of A086002.at n=32A086003
• Numbers n such that 3^n has the form 2p-+1 where p is prime.at n=18A096723
• 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, 1, 1), (1, 0, -1), (1, 0, 0), (1, 0, 1)}.at n=8A150445
• Larger of pairs of emirps (A006567) whose difference with the (smaller) reversal is a triangular number (A000217).at n=30A217286
• Primes of the form p(k)^2 + q(m)^2 with k > 0 and m > 0, where p(.) is the partition function (A000041), and q(.) is the strict partition function (A000009).at n=58A233346
• Number of (n+1) X (3+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=12A253430
• Primes p for which exactly five bases b with 1 < b < p exist such that p is a base b Wieferich prime.at n=14A255208
• Number of length n arrays of permutations of 0..n-1 with each element moved by -1 to 1 places and every four consecutive elements having its maximum within 4 of its minimum.at n=25A263710
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 563", based on the 5-celled von Neumann neighborhood.at n=32A272941
• Let p = n-th prime == 7 mod 8; a(n) = sum of quadratic residues mod p that are > p/2.at n=23A282040
• Primes in A301916 but not in A045318.at n=34A320481
• Primes p such that the concatenation of p^3, p^2, p and 1 is prime.at n=37A323428
• Prime numbersat n=3914