%I #3 Mar 30 2012 18:51:27
%S 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,1,21,41,61,81,101,
%T 121,141,161,181,201,221,241,261,281,301,321,341,361,381,2,22,42,62,
%U 82,102,122,142,162,182,202,222,242,262,282,302,322,342,362,382,3,23,43
%N Base 20 reversal of n (written in base 10).
%Y Cf. A004086, A030101-A030108, A056960-A056963.
%K base,nonn
%O 0,3
%A _Henry Bottomley_, Jul 18 2000
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