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Smallest multiple of n which begins with the reverse concatenation of first n natural numbers.
0

%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