33149

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 7x + 6.at n=31A023290
• 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 72.at n=0A031660
• a(n)=(-1)^n(1 - (1/12)n(n + 1)(12 - n + n^2)).at n=25A080275
• Smallest prime of the form: all threes followed by prime(n). a(n) >prime(n). 0 if no such prime exists.at n=34A114785
• Primes of the form p = prime(k) = (prime(k+3)+prime(k-1))/2.at n=31A126238
• Primes q = 4*p+1, where p == 2 (mod 5) is also prime.at n=53A221981
• Smallest sets of 3 consecutive odd numbers that are primes or pseudoprimes (base 2). The initial odd number is listed.at n=5A230808
• Primes of the form k^2 + 25.at n=40A346145
• a(n) is the number of ordered 6-tuples (a_1,a_2,a_3,a_4,a_5,a_6) having all terms in {1,...,n} such that there exists a tetrahedron ABCD with those edge-lengths, taken in a particular order (see comments).at n=8A349295
• The lesser of the 2^n-th twin prime pair (A001359).at n=9A356256
• Prime numbersat n=3552