24473

Properties

Appears in sequences

• Worst case of a Jacobi symbol algorithm.at n=7A005827
• a(n) = T(2*n+1,n+1), T given by A026998.at n=9A027004
• a(n) = Lucas(n+2) - 3.at n=18A027961
• Number of independent sets of vertices in graph K_4 X C_n (n > 2).at n=7A051929
• Number of partitions of the n-th decimal palindrome into distinct decimal palindromes.at n=45A091585
• Primes that are the difference of two Lucas numbers; primes in A113191.at n=28A113192
• Numerator of Sum/Product of first n Lucas numbers A000032[n].at n=18A121709
• Primes p such that denominator of Sum_{k=1..p-1} 1/k^2 is a square and denominator Sum_{k=1..p-1} 1/k^3 is a cube and denominator Sum_{k=1..p-1} 1/k^4 is a fourth power.at n=23A127062
• Numbers k such that 6*p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*(k+5)*p(k+6)-1 and 6*p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*(k+5)*p(k+6)+1 are twin primes with p(h) = h-th prime.at n=11A129313
• Prime numbers p such that p^3 - (p+1)^2 and p^3 + (p+1)^2 are both primes.at n=26A137476
• Prime numbers p such that p - 1 is the fourth a-figurate number and nineteenth b-figurate number for some a and b.at n=24A144327
• Prime numbers q of primitive Pythagorean triangles such that perimeters are averages of twin prime pairs, p+1=q(prime), a=q^2-p^2, c=q^2+p^2, b=2*p*q, ar=a*b/2; s=a+b+c, s-+1 are primes.at n=37A155187
• Primes p such that 2p+1, 3p+2 and 5p-2 are also primes.at n=23A178068
• Number of partitions of 3n into exactly 6 parts.at n=23A256315
• Array read by antidiagonals: T(m,n) = number of independent vertex sets in the complete prism graph K_m X C_n.at n=48A287376
• Yarborough primes that remain Yarborough primes when each of their digits are replaced by their cubes.at n=37A296563
• Primes p such that p+1 is a triprime and 2*p+1 is prime.at n=41A386295
• Prime numbersat n=2716