87643

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 2x + 5.at n=32A023304
• Primes that remain prime through 5 iterations of function f(x) = 2x + 5.at n=7A023332
• Numerators of continued fraction convergents to sqrt(651).at n=6A042250
• Restricted left truncatable (Henry VIII) primes.at n=25A055521
• Number triangle read by rows: T(n,k) = Sum_{j=0..n-k} C(n+j,j+k)*C(n-j,k).at n=48A117207
• Minimal index of order n Stanley's antimagic square composed of Smith numbers.at n=6A225133
• Primes p of the form m^2 + 27.at n=38A227622
• Left-truncatable primes p with property that prepending any single decimal digit to p does not produce a prime.at n=27A240768
• Twin primes with both terms having distinct digits in descending order.at n=12A261511
• a(n) = a(n-7) + a(n-4) + a(n-1) for n>1 and a(n)=1 for n<=1.at n=30A262602
• Prime numbersat n=8511