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Search: id:A083868
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| A083868 |
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Number of palindromic divisors d of n-th decimal palindrome m, such that 9<d<m. |
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+0
2
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| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 1, 3, 1, 3, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 3, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 3, 0, 0, 1, 2, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 3, 5, 1, 1, 1, 0, 3, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 3, 0, 1, 0, 2, 4, 1, 0, 3, 0, 2, 0, 0, 1, 0, 0, 1
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OFFSET
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1,13
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EXAMPLE
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n=116, divisors of A002113(116) = 1771 are
{1,7,11,23,77,161,253,1771}, 6 of them are palindromes {1,7,11,77,161,1771}
and three are >9 and <1771: {11,77,161}, therefore
a(116) = 3<A083867(116) = 6<A076888(116) = 8.
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CROSSREFS
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Cf. A078337, A083867, A076888, A000005, A002113.
Sequence in context: A134460 A130158 A104984 this_sequence A128199 A036459 A079167
Adjacent sequences: A083865 A083866 A083867 this_sequence A083869 A083870 A083871
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KEYWORD
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nonn,base
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 07 2003
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