A014884 n is equal to the number of 1's in all numbers <= n written in base 9.

1, 102772, 102773, 102774, 102775, 102776, 102777, 102778, 102779, 102780, 142155, 142156, 737002, 737003, 737004, 737005, 737006, 737007, 737008, 737009, 737010, 1594323, 1594324, 1697095, 1697096, 1697097, 1697098

Offset: 1

Author

Olivier Gérard

Keywords

• nonn
• base
• fini
• full

Links

• Robert Israel, Table of n, a(n) for n = 1..49

Crossrefs

Cf. A014778.

Programs

Maple

T:= 0: R:= NULL:
for n from 1 to 6*10^6 do
  T:= T + numboccur(1,convert(n,base,9));
  if T = n then R:= R, n fi
od:
R; # Robert Israel, Dec 01 2020