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 A309540 a(n) is the smallest positive number not yet in the sequence that contains exactly one even digit and exactly one odd digit from a(n-1), and no digit in a(n) is repeated. 0

%I

%S 10,102,12,21,120,103,30,130,104,14,41,124,123,23,32,132,125,25,52,

%T 152,126,16,61,106,105,50,150,107,70,170,108,18,81,128,127,27,72,172,

%U 129,29,92,192,142,134,34,43,143,140,109,90,190,160,136,36,63,163

%N a(n) is the smallest positive number not yet in the sequence that contains exactly one even digit and exactly one odd digit from a(n-1), and no digit in a(n) is repeated.

%C The terms sorted in increasing order give A309539.

%e a(2)=102: a(2) is not 100 (since zero would be repeated), nor 101 (since 1 would be repeated).

%Y Cf. A184992, A318700, A309390, A309539, A076654.

%K nonn,base,fini

%O 1,1

%A _Enrique Navarrete_, Aug 06 2019

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Last modified April 19 11:46 EDT 2021. Contains 343114 sequences. (Running on oeis4.)