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A083475 Consider the set of all the numbers n*k where 1 <= k <= n. Then a(n) = number of palindromic members of this set. 1
1, 2, 3, 2, 1, 1, 1, 1, 1, 0, 10, 0, 0, 0, 0, 0, 1, 1, 2, 0, 1, 6, 2, 0, 2, 2, 0, 2, 3, 0, 2, 0, 5, 2, 2, 2, 10, 2, 2, 0, 1, 1, 1, 4, 1, 2, 3, 1, 2, 0, 1, 1, 5, 0, 1, 1, 3, 4, 1, 0, 0, 2, 2, 1, 1, 6, 1, 2, 3, 0, 0, 0, 2, 6, 1, 0, 12, 2, 1, 0, 0, 1, 1, 2, 1, 0, 1, 9, 1, 0, 8, 1, 1, 1, 1, 4, 1, 1, 10, 0, 19, 0, 2, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(10k) = 0.

LINKS

Table of n, a(n) for n=1..104.

EXAMPLE

a(22) = 6 and the palindromes are 22,44,66,88,242,484.

a(26) = 2 and the palindromes are 494 and 676.

CROSSREFS

Cf. A083476.

Sequence in context: A110540 A346399 A339071 * A211994 A122402 A179008

Adjacent sequences:  A083472 A083473 A083474 * A083476 A083477 A083478

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 03 2003

EXTENSIONS

More terms from David Wasserman, Nov 15 2004

STATUS

approved

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Last modified January 28 15:20 EST 2022. Contains 350657 sequences. (Running on oeis4.)