22549

Properties

Appears in sequences

• Coordination sequence for MgNi2, Position Mg2.at n=37A009935
• 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 42.at n=2A031630
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 100 ones.at n=14A031868
• Primes of form prime(1) + ... + prime(k) + 1.at n=13A053845
• a(n) = prime(2*n*(n+1)+1).at n=35A078746
• Primes p = p_(n+1) such that p_n + p_(n+2) = 2*p_(n+1) + 12.at n=22A095673
• Primes p = prime(i) of level (1,3), i.e., such that A118534(i) = prime(i-3).at n=39A118467
• Number of -n..n circular arrays x(0..5) of 6 elements with zero sums of x(i) and x(i)*x((i+1) mod 6).at n=10A202008
• Primes that remain prime when a single digit 9 is inserted between any two consecutive digits or as the leading or trailing digit.at n=24A215421
• Primes p congruent to 1 mod 12 such that (p + 1)/2 does not divide the numerator of the Bernoulli number B(p + 1).at n=24A232039
• Initial primes of sets of 8 consecutive primes all different by modulo 30.at n=42A248199
• Expansion of Product_{k>=1} 1/(1 - k*(x^(2*k+1))).at n=41A266138
• Primes that can be constructed by concatenating two squares >= 4.at n=20A345314
• Primes having only {2, 4, 5, 9} as digits.at n=21A386154
• Triangle read by rows: numerators of the almost-Riordan array ( (3 - 3*x)/(2*x^2 - 6*x + 3) | 3/(2*x^2 - 6*x + 3), (1 - 3*x - sqrt(5*x^2 - 6*x + 1))/(2*x) ).at n=40A389749
• Prime numbersat n=2521