57075
domain: N
Appears in sequences
- Numbers k such that k and k+1 have the same sum and number of prime divisors (with repetition).at n=1A064351
- Number of indecomposable permutations sortable using two parallel stacks.at n=9A215252
- The average of prime factors of n and n+1 is the same.at n=14A227755
- Numbers k such that k+1 is a divisor of 3^k + 5^k.at n=7A234536
- Palindromes in base 10 that are also palindromes in base 60.at n=18A262069
- Numbers k such that s(k) = s(k+1), where s(k) is A059975.at n=25A327250