List of all numbers n such that n is equal to the number of 7's in the decimal digits of all numbers <= n.
A130429
List of all numbers n such that n is equal to the number of 7's in the decimal digits of all numbers <= n.
Terms
- a(0) =0a(1) =9465000000a(2) =9471736170a(3) =9500000000a(4) =9757536170a(5) =9965000000a(6) =9971736170a(7) =10000000000a(8) =19465000000a(9) =19471736170a(10) =19500000000a(11) =19757536170a(12) =19965000000a(13) =19971736170a(14) =20000000000a(15) =29465000000a(16) =29471736170
External references
- oeis: A130429