%I #9 Jan 05 2020 14:41:11

%S 0,1,2,3,4,5,6,7,8,9,0,11,0,11,4,13,2,11,0,19,20,1,11,23,4,11,25,3,11,

%T 29,20,31,2,11,24,35,1,15,22,39,0,11,20,33,44,3,14,27,33,49,20,31,41,

%U 51,4,11,20,31,44,59,40,51,62,3,14,25,33,43,55,69,60

%N For any number n >= 0 with decimal digits (d_1, d_2, ..., d_k), the decimal expansion of a(n) is (n mod (1+d_1), n mod (1+d_2), ..., n mod (1+d_k)).

%H Rémy Sigrist, <a href="/A330970/b330970.txt">Table of n, a(n) for n = 0..10000</a>

%F a(n) <= n with equality iff n belongs to A330969.

%F a(n) = 0 iff n belongs to A330971.

%e For n = 42:

%e - 42 mod (1+4) = 2,

%e - 42 mod (1+2) = 0,

%e - hence a(42) = 20.

%o (PARI) a(n) = fromdigits(apply(d -> n%(d+1), digits(n)))

%Y Cf. A330969 (fixed points), A330971 (indices of zeros).

%K nonn,base,look

%O 0,3

%A _Rémy Sigrist_, Jan 05 2020