A004177 - OEIS

A004177

Omit 2's from n.

0, 1, 0, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1, 13, 14, 15, 16, 17, 18, 19, 0, 1, 0, 3, 4, 5, 6, 7, 8, 9, 30, 31, 3, 33, 34, 35, 36, 37, 38, 39, 40, 41, 4, 43, 44, 45, 46, 47, 48, 49, 50, 51, 5, 53, 54, 55, 56, 57, 58, 59, 60, 61, 6, 63, 64, 65, 66, 67, 68, 69, 70, 71, 7, 73, 74

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,4

LINKS

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

MAPLE

f:= proc(n) local L, i;

L:= subs(2=NULL, convert(n, base, 10));

add(L[i]*10^(i-1), i=1..nops(L))

end proc:

map(f, [$0..100]); # Robert Israel, Sep 15 2024

MATHEMATICA