102134

Appears in sequences

• Consider trajectory of n under repeated applications of the function f(x) = 'Sum of the prime factors of x (with multiplicity)' (see A029908). Sequence gives composite numbers n that end at a prime m that divides n and m is greater than any m's seen already.at n=13A084931
• a(n) = smallest k such that the digits of exactly n nonnegative numbers are a subsequence of the digits of k.at n=43A275782