A243902 Number of pairs of terms of the sequence A237929 less than 10^n.
2, 3, 4, 9, 18, 45, 146, 469, 1655, 6095, 23775
Offset: 1
Links
- Giovanni Resta, eRAPs, the 446139 terms < 10^12.
- Carlos Rivera, Extension to Ruth Aaron pairs
Crossrefs
Cf. A001414, A006145 Ruth-Aaron numbers (1): sum of prime divisors of n = sum of prime divisors of n+1, A228126 Sum of prime divisors of n (with repetition) is one less than the sum of prime divisors (with repetition) of n+1, A237929 Numbers n such that (i) the sum of prime divisors of n (with repetition) is one less than the sum of prime divisors (with repetition) of n+1, and (ii) n and n+1 have the same number of prime divisors (with repetition).