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A050686
Number of palindromes of length n and containing the digit 1 (or any other fixed nonzero digit).
+0
2
1, 1, 18, 18, 252, 252, 3168, 3168, 37512, 37512, 427608, 427608, 4748472, 4748472, 51736248, 51736248, 555626232, 555626232, 5900636088, 5900636088, 62105724792, 62105724792, 648951523128, 648951523128, 6740563708152
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 4 15:07 EST 2009. Contains 170310 sequences.
AT&T Labs Research
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