17944

Appears in sequences

• Fibonacci sequence beginning 2, 10.at n=17A022367
• Numbers k such that 223*2^k+1 is prime.at n=26A032488
• Denominators of continued fraction convergents to sqrt(389).at n=13A041739
• Let (u1,u2) be successive untouchable numbers such that phi(u1) = phi(u2); sequence gives values of u2.at n=36A048190
• Numbers k such that k^2 is a palindrome when written in base 17.at n=37A118651
• Numbers n such that n^24 + 1 = p*q with p,q distinct primes.at n=29A119982
• 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, 0, 1), (0, 1, -1), (1, 0, 0)}.at n=10A148560
• Let S be a string of n 2's and 3's, with curling number k, which means S = XY^k where k is maximized; a(n) = number of S for which X must be taken to be the empty string.at n=31A216951
• a(n) has exactly (a(n) - n) / 2 partitions with exactly (a(n) - n) / 2 prime parts.at n=30A299732
• Number of non-self-conjugate partitions of n.at n=36A330644
• Number of compositions of n with the multiplicity of the first part odd.at n=15A331606
• Number of n-digit left- or right-truncatable primes with no consecutive zero digits.at n=40A346662
• Numbers k which are the product of a cube greater than 1 and a prime, and where k-1 and k-2 are semiprimes.at n=32A350284
• Absolute discriminants of imaginary quadratic number fields with elementary bicyclic 5-class group (5,5).at n=2A359871