%I
%S 1,2,3,4,5,91,6,92,7,181,8,271,93,94,95,182,96,183,184,185,272,97,361,
%T 98,451,186,273,274,275,362,187,452,276,363,364,365,453,366,541,188,
%U 631,277,542,367,632,454,455,543,456,633,544,545,634,635,721,278,811,368,901,457,722,546,723,636,812
%N Lexicographically earliest sequence of distinct positive terms ending in their digital root such that the result of a(n) + a(n+1) also ends in its digital root.
%H JeanMarc Falcoz, <a href="/A334536/b334536.txt">Table of n, a(n) for n = 1..2000</a>
%e a(5) = 5 ends with 5, its digital root;
%e a(6) = 91 ends with 1, its digital root;
%e a(5) + a(6) = 96 also ends with its digital root.
%Y Cf. A010888, A280658.
%K base,nonn
%O 1,2
%A _Eric Angelini_ and _JeanMarc Falcoz_, May 05 2020
