196247

Properties

Appears in sequences

• Numerators of continued fraction convergents to sqrt(445).at n=5A041846
• Primes of form p^2 - 2, where p is prime.at n=30A049002
• a(1) = 2; for n > 1, a(n) = largest prime not exceeding a(1) + ... + a(n-1).at n=18A068524
• Lexicographically earliest infinite sequence of distinct positive numbers with the property that every positive integer is a sum of distinct terms (see algorithm below).at n=18A075058
• a(n) = 21*a(n-1) + a(n-2), starting with a(0) = 2 and a(1) = 21.at n=4A090310
• Primes of the form p^q - q, where p and q are primes.at n=32A182474
• Smaller of Fermi-Dirac twin primes (A229064) which are not the smaller of twin primes (A001359).at n=36A229500
• Numbers k such that tau(k) and tau(k+2) are both prime, where tau is the number of divisors function (the lesser of twin prime pairs are excluded).at n=38A343495
• Primes of the form p^q - 2, where p and q are primes.at n=34A389431
• Prime numbersat n=17678