39829

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 7x + 6.at n=37A023290
• 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 15.at n=31A031603
• Number of strings of numbers x(i=1..7) in 0..n with sum i^2*x(i)^2 equal to n^2*49.at n=19A184245
• Wiener index of a benzenoid consisting of a spiral chain of n hexagons (s=1; see the Gutman et al. reference).at n=21A193391
• Primes (with d digits, say) that generate another prime when acted on by the "standard" superpermutation of length A007489(d) of d elements (cf. comment).at n=38A244311
• Primes of form n^2 + 625.at n=40A256777
• Prime numbers followed by two consecutive numbers which are products of four distinct primes (or tetraprimes).at n=11A362578
• Greater of twin self primes, i.e., larger member of the pair of self primes differing by 2.at n=4A380715
• Prime numbersat n=4186