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%I #26 Jan 01 2018 21:25:28
%S 0,9,1,8,2,7,3,6,4,5,18,27,36,45,54,63,72,81,90,180,91,80,92,70,93,60,
%T 94,50,95,40,96,30,97,20,98,10,909,181,82,71,83,61,84,51,85,41,86,31,
%U 87,21,88,11,809,182,73,62,74,52,75,42,76,32,77,22,78,12,709,183,64,53,65
%N Smallest integer not occurring earlier such that the concatenation of the integers has the property that the first two digits sum to 9, the next two digits also, etc.
%C This sequence contains no beastly numbers (A051003). - _Rémy Sigrist_, Dec 31 2017
%H Rémy Sigrist, <a href="/A098783/b098783.txt">Table of n, a(n) for n = 0..10000</a>
%H Rémy Sigrist, <a href="/A098783/a098783.gp.txt">PARI program for A098783</a>
%e When parenthesis are added one can see the successive pairs of digits with sum 9: (0, 9), (1, 8), (2, 7), (3, 6), (4, 5), (18), (27), (36), (45), (54), (63), (72), (81), (90), (18)(0, 9)(1, ... - _Eric Angelini_, Dec 18 2017
%Y Cf. A051003.
%K base,easy,nonn
%O 0,2
%A _Eric Angelini_, Oct 04 2004
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