155011

Appears in sequences

• n-th 4k+1 prime times n-th 4k-1 prime.at n=38A048630
• Sequence of pairwise relatively prime numbers of class P_8 (see comment in A275246).at n=38A275253
• 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=40A374218
• Composite numbers k such that A347381 obtains the same value for all divisors of k that are 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=16A374219