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A018849 Strobogrammatic squares: the same upside down (calculator-style numerals). 2
0, 1, 121, 6889, 10201, 69169, 1002001, 5221225, 100020001, 109181601, 522808225, 602555209, 10000200001, 62188888129, 1000002000001, 1212225222121, 100000020000001, 10000000200000001, 10022212521222001, 12102202520220121 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

CROSSREFS

Sequence in context: A206629 A014758 A069600 * A011814 A144766 A176923

Adjacent sequences:  A018846 A018847 A018848 * A018850 A018851 A018852

KEYWORD

nonn,base

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified February 15 04:59 EST 2012. Contains 205694 sequences.