Number of k < 10^n such that A047988(k) = 0.
A212524
Number of k < 10^n such that A047988(k) = 0.
Terms
- a(0) =3a(1) =17a(2) =108a(3) =755a(4) =5936a(5) =48474a(6) =406270a(7) =3532031a(8) =31295358a(9) =279591668a(10) =2521429242a(11) =22996137423
External references
- oeis: A212524