38921

Properties

Appears in sequences

• Primes equal to the sum of the first k primes for some k.at n=14A013918
• Dimensions of homogeneous subspaces of shuffle algebra over 6-letter alphabet (see A058766 for 2-letter case).at n=6A058821
• Primes p such that p+2, p^2 - 2p + 2, and p^2 - 2p + 4 are all prime.at n=18A101315
• Records in A111267.at n=25A111268
• Primes A080478(n)^2 + A080478(n+1)^2.at n=24A139361
• Pythagorean primes p such that for all primes q < p, p XOR q is not equal to p - q.at n=33A197918
• Omit the 1s from first differences of A084663.at n=61A231900
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 449", based on the 5-celled von Neumann neighborhood.at n=40A272254
• Primes p such that p - 3 divides 3^p - 3.at n=33A302988
• Primes p such that p+2, (p+1)||p and (p+1)||(p+2) are primes (where || denotes concatenation in base 10).at n=34A309934
• a(n) = numerator of Sum_{d|n} (1/pod(d)) where pod(k) = the product of the divisors of k (A007955).at n=27A324501
• a(n) is the smallest lesser twin prime p from A001359 such that the distance to the previous lesser twin prime is 6*n.at n=28A340573
• Lesser members of twin primes which are the sum of the first k primes for some number k.at n=5A346706
• Lesser of twin primes (A001359) being both half-period primes (A097443).at n=39A347225
• Prime numbersat n=4100