26293

Properties

Appears in sequences

• 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 46.at n=1A031634
• Numbers n such that n and n+4^k are all primes for k=1,2,3.at n=40A049493
• Primes p for which the period of reciprocal 1/p is (p-1)/12.at n=34A056217
• Numbers p from A001125 such that 2*p-3 is prime.at n=33A063939
• Numbers n such that the numbers of divisors of n,n+1,n+2 and n+3 are k,2k,4k,8k respectively for some k.at n=12A100364
• Primes in A103375.at n=17A103385
• Primes p such that q = 4p^2 + 1 and r = 4q^2 + 1 are also prime.at n=35A122424
• Primes p2 such that p1^3 + p2^2 is an average of twin primes and p1 < p2 are consecutive primes.at n=19A138755
• G.f.s of the z^p coefficients of the polynomials in the GF4 denominators of A156933.at n=12A157705
• T(n,k) = 5*A046802(n,k) - 4*A007318(n,k), triangle read by rows (0 <= k <= n).at n=38A168290
• T(n,k) = 5*A046802(n,k) - 4*A007318(n,k), triangle read by rows (0 <= k <= n).at n=42A168290
• Odd numbers n such that 2n is a term in A247665.at n=8A249556
• Primes of the form 5*n^2 - 5*n + 13.at n=43A320752
• Numbers k such that (22^k - 3^k)/19 is prime.at n=4A381338
• Prime numbersat n=2889