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Search: id:A135316
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| 691, 887, 1997, 3583, 3673, 3853, 3943, 4079, 4259, 4349, 4799, 4889, 5581, 5851, 6257, 6977, 8089, 8179, 8269, 8539, 8629, 8719, 10663, 10883, 11777, 11833, 11867, 11923, 11953, 11959, 12097, 12763, 12823, 13397, 13523, 13553, 13597, 13633
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OFFSET
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1,1
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COMMENT
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A023108(n) = Positive integers which apparently never result in a palindrome under repeated applications of the function f(x) = x + (x with digits reversed).
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EXAMPLE
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A023108(n) begins {196, 295, 394, 493, 592, 689, 691, 788, 790, 879, 887, ...}.
Thus a(1) = 691 which is the first prime in A023108(n), a(2) = 887 which is the second prime in A023108(n).
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CROSSREFS
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Cf. A023108, A088753.
Sequence in context: A159283 A106281 A127341 this_sequence A160500 A046753 A033563
Adjacent sequences: A135313 A135314 A135315 this_sequence A135317 A135318 A135319
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KEYWORD
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nonn
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AUTHOR
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Alexander Adamchuk (alex(AT)kolmogorov.com), Dec 05 2007
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EXTENSIONS
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Added more terms. Dmitry Kamenetsky (dkamen(AT)rsise.anu.edu.au), May 04 2009
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