OFFSET
1,1
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
MAPLE
filter:= proc(n) local L, t;
L:= convert(n, base, 10);
t:= numboccur(1, L);
t > 0 and t = numboccur(2, L)
end proc:
select(filter, [$1..1000]); # Robert Israel, Oct 29 2024
CROSSREFS
KEYWORD
nonn,base,easy,changed
AUTHOR
STATUS
approved