Number of k < 10^n such that A047988(k) = 3.
A213532
Number of k < 10^n such that A047988(k) = 3.
Terms
- a(0) =0a(1) =0a(2) =454a(3) =698a(4) =8137a(5) =90324a(6) =946964a(7) =9705879a(8) =97790090a(9) =977682518a(10) =9730782305
External references
- oeis: A213532