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A135551 Number of bases b, 1 < b < n, in which n is a palindrome. 4
0, 0, 0, 1, 1, 2, 1, 2, 2, 2, 3, 1, 2, 2, 2, 3, 3, 3, 3, 1, 3, 4, 2, 2, 4, 2, 4, 3, 4, 2, 3, 3, 3, 3, 3, 2, 5, 2, 3, 2, 5, 2, 4, 2, 3, 4, 4, 1, 5, 2, 4, 4, 5, 1, 4, 4, 4, 4, 2, 2, 6, 2, 3, 5, 4, 5, 4, 3, 4, 2, 4, 2, 6, 3, 3, 3, 3, 2, 6, 1, 7, 3, 4, 2, 6, 5, 3, 2, 5, 2, 5, 4, 5, 4, 2, 2, 6, 2, 5 (list; graph; refs; listen; history; internal format)
OFFSET

0,6

COMMENTS

Every integer n is a palindrome when expressed in unary, or in base n-1 (where is will be 11).

LINKS

John P. Linderman, Description of A135549-A135551 and A016038

John P. Linderman, Perl program [Use the command: BASEDELTA=0 palin.pl]

CROSSREFS

Cf. A135550, A135549, A016038.

Sequence in context: A179752 A085693 A067995 * A065531 A131840 A144590

Adjacent sequences:  A135548 A135549 A135550 * A135552 A135553 A135554

KEYWORD

nonn

AUTHOR

John P. Linderman (jpl(AT)research.att.com), Feb 26 2008, Feb 28 2008

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Last modified February 16 04:18 EST 2012. Contains 205860 sequences.