28621

Properties

Appears in sequences

• Primes p whose period of reciprocal equals (p-1)/9.at n=18A056214
• Row sums of triangle A091499, in which A091499(n,k) equals the k-th term of the convolution of the two prior rows indexed by (n-k) and (k-1).at n=25A091501
• Primes from merging of 5 successive digits in decimal expansion of the Golden Ratio, (1+sqrt(5))/2.at n=3A103809
• Primes from merging of 5 successive digits in decimal expansion of the Euler-Mascheroni Constant.at n=25A104939
• Primes of the form p = prime(k+1) such that prime(k) = (prime(k+3)+prime(k-1))/2.at n=30A126239
• Primes from merging of 5 successive digits in decimal expansion of Euler-Mascheroni constant.at n=27A198779
• Number of (w,x,y) with all terms in {0,...,n} and |w-x|+|x-y|+|y-w| <= w+x+y.at n=33A213487
• Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..7 array extended with zeros and convolved with 1,-2,1.at n=18A222152
• Primes p such that if q is the next prime after p then the concatenation of p with q and the concatenation of q with p are both primes.at n=38A225575
• The average Wiener index of the set of all fibonacenes with n hexagons.at n=15A245969
• Centered 20-gonal (or icosagonal) primes.at n=13A264845
• Primes p such that both 2p-1 and 2p^2-2p+1 are prime.at n=38A274609
• Solution of the complementary equation a(n) = a(0)*b(n-1) + a(1)*b(n-2) + ... + a(n-1)*b(0) + n, where a(0) = 1, a(1) = 3, b(0) = 2, and (a(n)) and (b(n)) are increasing complementary sequences.at n=8A296225
• a(n) is the least prime p such that n^2 + (p-n)^2 is prime and k^2 + (p-k)^2 is composite for 1 <= k < n.at n=47A376920
• Prime numbersat n=3116