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Search: id:A030155
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A030155 Odd n such that in n^2 the parity of digits alternates. +0
1
1, 3, 5, 7, 9, 11, 13, 19, 23, 27, 31, 69, 81, 111, 113, 119, 127, 137, 181, 187, 237, 269, 273, 277, 281, 311, 461, 463, 539, 661, 673, 677, 689, 819, 831, 1019, 1027, 1111, 1113, 1119, 1127, 1137, 1269, 1277, 1287, 1361, 1369, 1377, 1863, 1969 (list; graph; listen)
OFFSET

0,2

CROSSREFS

Sequence in context: A050150 A062090 A133854 this_sequence A039786 A130738 A024323

Adjacent sequences: A030152 A030153 A030154 this_sequence A030156 A030157 A030158

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com)

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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