56671

Properties

Appears in sequences

• a(n) = -Sum_{k = 0..n-1} (n+k)!a(k)/(2k)!.at n=9A007682
• Primes that remain prime through 3 iterations of function f(x) = 8x + 3.at n=17A023292
• Triangle inverse to that in A046899.at n=45A046900
• Numbers k such that 2^(k-1) == 1 + b*k (mod k^2), where b divides k - 2^p for some integer p >= 0 and 2^p <= b.at n=41A186884
• Primes of the form n^2+number of divisors of n^2.at n=33A188665
• Primes p of the form m^2 + 27.at n=32A227622
• Primes p such that p and prime(p) end with the same three digits.at n=11A271045
• Primes p such that there are exactly p solutions to y^2 + x*y + y == x^3 + x^2 - 10*x - 10 (mod p).at n=39A275777
• Primes which contain the fax number of the beast (667).at n=19A321001
• Prime numbersat n=5746