Numbers n such that pi(n)=pi(d_1!)+pi(d_2!)+...+pi(d_k!) where d_1 d_2 ...d_k is the decimal expansion of n.
A105327
Numbers n such that pi(n)=pi(d_1!)+pi(d_2!)+...+pi(d_k!) where d_1 d_2 ...d_k is the decimal expansion of n.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =115a(4) =1626a(5) =5370a(6) =5371a(7) =5570a(8) =5571a(9) =6170a(10) =6171a(11) =40854a(12) =373369a(13) =373469a(14) =419386a(15) =419658a(16) =419685a(17) =889609a(18) =889619
External references
- oeis: A105327