190773

Appears in sequences

• Numbers k such that k and k+1 have the same sum but an unequal number of divisors.at n=23A054007
• Numbers k such that sigma(k)*omega(k) = sigma(k+1)*omega(k+1), where omega(k) is the number of distinct prime divisors of n (A001221).at n=20A063071
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+47)^2 = y^2.at n=15A118675
• Numbers k such that s(k) = s(k+1), where s(k) is the sum of recursive divisors of k (A333926).at n=33A333949
• Numbers k such that A051378(k) = A051378(k+1).at n=35A349283
• Numbers k such that k and k+1 are both in A353543.at n=2A353544