13505625
domain: N
Appears in sequences
- Numbers k such that phi(k)^phi(k) == 1 (mod sigma(k)).at n=34A248861
- Twisted variant of A276086 indexed by A328625.at n=52A328624
- a(n) = A276086(A328623(n)).at n=50A346233
- Odd numbers k such that sigma(k) > 2*k and A003415(sigma(k)) < k, where A003415 is the arithmetic derivative, and sigma is the sum of divisors function.at n=10A347890