142859

Appears in sequences

• a(n) = (12*n+1)*(12*n+11).at n=31A001538
• Sequence of pairwise relatively prime numbers of class P_4 (see comment in A275246).at n=37A275248
• Odd composites k, not powers of primes, such that for all their nontrivial unitary divisors d it holds that A347381(d) > A347381(k).at n=6A347383
• After the initial 1, numbers k such that A347381 obtains its minimum value at k, of all the divisors d of k larger than one, where A347381 is the distance from n to the nearest common ancestor of n and sigma(n) in the Doudna-tree (A005940).at n=39A374218