%I #5 Dec 05 2013 19:55:34
%S 1,210,321,43212,543210,6543210,76543215,876543216,987654321,
%T 109876543210,11109876543216,1211109876543216,131211109876543216,
%U 14131211109876543214,1514131211109876543210,161514131211109876543216
%N Smallest multiple of n which begins with the reverse concatenation of first n natural numbers.
%e a(7) = 12345676 = 1763668*7 which starts with 1234567.
%Y Cf. A074158.
%K base,nonn
%O 1,2
%A _Amarnath Murthy_, Aug 29 2002
%E Corrected and extended by _Sascha Kurz_, Jan 15 2003