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A083868 Number of palindromic divisors d of n-th decimal palindrome m, such that 9<d<m. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,13
LINKS
EXAMPLE
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.
CROSSREFS
Sequence in context: A187497 A325704 A104984 * A128199 A345063 A337216
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, May 07 2003
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)