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Search: id:A124334
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A124334 Nonpalindromes in base 10 that are palindromes in base 2. +0
1
15, 17, 21, 27, 31, 45, 51, 63, 65, 73, 85, 93, 107, 119, 127, 129, 153, 165, 189, 195, 219, 231, 255, 257, 273, 297, 325, 341, 365, 381, 387, 403, 427, 443, 455, 471, 495, 511, 513, 561, 633, 645, 693, 765, 771, 819, 843, 891, 903, 951, 975 (list; graph; listen)
OFFSET

1,1

MATHEMATICA

Select[Range[1000], Reverse[IntegerDigits[ # ]] != IntegerDigits[ # ] && Reverse[IntegerDigits[ #, 2]] == IntegerDigits[ #, 2] &]

CROSSREFS

Cf. A007632 = numbers that are palindromic in bases 2 and 10.

Adjacent sequences: A124331 A124332 A124333 this_sequence A124335 A124336 A124337

Sequence in context: A043669 A043704 A074748 this_sequence A002155 A091017 A113968

KEYWORD

base,nonn

AUTHOR

Tanya Khovanova (tanyakh(AT)yahoo.com), Dec 26 2006

page 1

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.


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