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Search: id:A124664
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| A124664 |
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Both n and its reverse are one more than a square. |
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+0
1
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| 1, 2, 5, 10, 50, 101, 626, 730, 1090, 2210, 5477, 7745, 10001, 10610, 71290, 227530, 1000001, 1010026, 1014050, 1040401, 2217122, 2676497, 5053505, 5631130, 6200101, 6265010, 7946762
(list; graph; listen)
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OFFSET
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1,2
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MATHEMATICA
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Select[Range[10000000], IntegerQ[Sqrt[ # - 1]] && IntegerQ[Sqrt[FromDigits[Reverse[IntegerDigits[ # ]]] - 1]] &]
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CROSSREFS
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A066618 is a subsequence of this sequence of numbers that do not end in 0. The sequence A027720 = Palindromes of form n^2 + 1 - is a palindromic subsequence of this sequence.
Sequence in context: A139010 A018472 A082593 this_sequence A076776 A020755 A018503
Adjacent sequences: A124661 A124662 A124663 this_sequence A124665 A124666 A124667
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KEYWORD
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base,nonn
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AUTHOR
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Tanya Khovanova (tanyakh(AT)yahoo.com), Dec 23 2006
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