%I #8 Mar 31 2024 02:14:23
%S 100,4,88,39999988,69999999999999999999999999988,
%T 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999988
%N Smallest multiple of 4 with digit sum 4^n.
%K nonn,base,easy
%O 0,1
%A _Amarnath Murthy_, Apr 02 2002
%E a(4) corrected by _Sean A. Irvine_, Mar 30 2024