

A165611


The number of ndigit nonpapaya numbers.


4



0, 0, 648, 7128, 85536, 870750, 8937054, 89606088, 899190558, 8995054860, 89990100090, 899940633714, 8999883000108, 89999307063540, 899998650010008, 8999992080398088, 89999984700000144, 899999910900869040, 8999999829000000162, 89999999010004961988
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OFFSET

1,3


COMMENTS

These are numbers that are neither palindromes nor concatenations of two palindromes. Three digit numbers that are nonpapaya are numbers with all distinct digits. There are 9*9*8 of them: 648.


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CROSSREFS



KEYWORD

base,nonn


AUTHOR



EXTENSIONS



STATUS

approved



