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%I #9 Aug 27 2020 16:47:31
%S 0,0,648,7128,85536,870750,8937054,89606088,899190558,8995054860,
%T 89990100090,899940633714,8999883000108,89999307063540,
%U 899998650010008,8999992080398088,89999984700000144,899999910900869040,8999999829000000162,89999999010004961988
%N The number of n-digit non-papaya numbers.
%C These are numbers that are neither palindromes nor concatenations of two palindromes. Three digit numbers that are non-papaya are numbers with all distinct digits. There are 9*9*8 of them: 648.
%H Tanya Khovanova, <a href="http://blog.tanyakhovanova.com/?p=177">Papaya Words and Numbers</a>
%F a(n) = A052268(n) - A165135(n).
%Y Cf. A165135, A165136, A165137, A165610.
%K base,nonn
%O 1,3
%A _Tanya Khovanova_, Sep 22 2009
%E a(6)-a(20) from _Andrew Howroyd_, Mar 29 2016
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