a(n) is the least number k such that k, k - s and k + s all have n prime divisors, counted with multiplicity, where s is the sum of the decimal digits of k.
A383665
a(n) is the least number k such that k, k - s and k + s all have n prime divisors, counted with multiplicity, where s is the sum of the decimal digits of k.
Terms
- a(0) =15a(1) =102a(2) =204a(3) =408a(4) =3078a(5) =14496a(6) =88448a(7) =128768a(8) =6857312a(9) =111411968a(10) =844844000a(11) =6059394048a(12) =13384999936a(13) =948305874880
External references
- oeis: A383665