A028900 Map n = Sum c_i 10^i to a(n) = Sum c_i 5^i.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 35, 36, 37, 38, 39

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• base
• look

Links

• Robert Israel, Table of n, a(n) for n = 0..10000

Programs

Maple

f:= proc(n) local L,i;
  L:= convert(n,base,10);
  add(L[i]*5^(i-1),i=1..nops(L))
end proc:
map(f, [$1..100]); # Robert Israel, Jan 14 2021

Extensions

More terms from Erich Friedman.