%I
%S 1,2223,2728,4950,5050,7272,7777,9999
%N Complete list of 4Kaprekar numbers.
%H D. E. Iannucci, <a href="http://www.cs.uwaterloo.ca/journals/JIS/index.html">The Kaprekar numbers</a>, J. Integer Sequences, Vol. 3, 2000, #1.2.
%H <a href="/index/Coi#Colombian">Index entries for Colombian or self numbers and related sequences</a>
%Y Cf. A006886, A037042, A053394, A053395, A053396, A053397.
%K nonn,fini,full,base
%O 1,2
%A _N. J. A. Sloane_, Jan 07 2000
