20297

Properties

Appears in sequences

• Recip transform of 2*(1 + x^2 + x^4)-1/(1-x).at n=13A049153
• Primes p such that x^59 = 2 has no solution mod p.at n=36A059312
• Smallest number m such that m = p(i+1) mod p(i) for 1<=i<=n.at n=5A071057
• Given the infinite continued fraction i+(i/(i+(i/(i+...)))), where i is the square root of (-1), this is the numerator of the real part of the convergents.at n=17A091806
• Balanced primes of order five.at n=38A096697
• Primes p such that q-p = 26, where q is the next prime after p.at n=10A124594
• Father primes of order 8.at n=31A136077
• Primes congruent to 45 mod 61.at n=36A142843
• Primes p such that p^2 - 2 is a 5-almost prime.at n=34A156620
• Positive numbers y such that y^2 is of the form x^2+(x+647)^2 with integer x.at n=8A159641
• Primes p such that sod(p)=2*sod(nextprime(p)).at n=35A175546
• Primes congruent to 1 mod 59.at n=37A216315
• Primes p such that p^4 + p + 1 and p^4 - p - 1 are also prime.at n=17A236073
• a(n) is the number of distinct products p of Fibonacci numbers such that Fibonacci(n) < p <= Fibonacci(n + 1).at n=46A286948
• Primes that can be generated by the concatenation in base 7, in ascending order, of two consecutive integers read in base 10.at n=19A287308
• Prime time primes (of the form HMMSS with primes H < 24 and MM, SS < 60) such that the corresponding number of seconds after midnight is also prime.at n=1A295000
• Prime time primes on 6-digit clocks, second definition: primes of the form HMMSS where H, MM, SS are primes, H < 24, MM and SS < 60.at n=3A295013
• Sum over all partitions of n of the LCM of the number of parts and the number of distinct parts.at n=22A339394
• Primes p such that neither g-1 nor g+1 is prime, where g is the gap from p to the next prime.at n=17A355485
• Primes having only {0, 2, 7, 9} as digits.at n=43A386054