29262

Appears in sequences

• Numbers k such that sigma(phi(k)) = phi(sigma(k)).at n=13A033632
• Squarefree n such that sigma(phi(n)) = phi(sigma(n)).at n=1A058652
• Numbers k such that phi(2*sigma(k)) = 2*sigma(phi(k)).at n=16A067709
• Number of double points of the map that, for each term t of a sequence, counts the preceding terms that are greater than or equal to t.at n=10A071962
• Numbers k such that sigma(phi(k)) divides phi(sigma(k)).at n=24A073858
• Numbers k such that sigma(phi(k)) == phi(sigma(k)) (mod k), that is, A033632(k)/k is an integer.at n=15A092584
• Positions of harmonic numbers in the EKG sequence.at n=15A140804
• Values of n such that n^a-+a are primes, a=5.at n=30A155021
• Least k such that prime(n) is the smallest prime p for which k^2 + p^2 is also prime, or 0 if none.at n=43A263466
• Number of partitions of n with seven kinds of 1.at n=11A320753