%I #43 Oct 03 2021 18:55:09
%S 1,0,10,91,919,9190,91901,919018,9190173,91901746,919017453,
%T 9190174538,91901745381,919017453809,9190174538100,91901745380991,
%U 919017453809928,9190174538099262,91901745380992639,919017453809926380,9190174538099263811,91901745380992638108,919017453809926381082,9190174538099263810819,91901745380992638108199,919017453809926381081990
%N Lexicographically earliest sequence S of distinct nonnegative terms such that the digits of (a(n) + a(n+1)) are the first n digits of S.
%C A self-describing sequence.
%e a(1) + a(2) = 1 + 0 = 1 and this 1 is the first digit of S;
%e a(2) + a(3) = 0 + 10 = 10 and 1, 0 are the first 2 digits of S;
%e a(3) + a(4) = 10 + 91 = 101 and 1, 0, 1 are the first 3 digits of S;
%e a(4) + a(5) = 91 + 919 = 1010 and 1, 0, 1, 0 are the first 4 digits of S;
%e a(5) + a(6) = 919 + 9190 = 10109 and 1, 0, 1, 0, 9 are the first 5 digits of S;
%e etc.
%Y Cf. A300000.
%K base,nonn
%O 1,3
%A _Eric Angelini_ and _Carole Dubois_, Sep 30 2021