

A214423


Numbers n palindromic in only one base b, 2 <= b <= 10.


9



11, 12, 13, 14, 22, 23, 25, 29, 30, 32, 34, 35, 37, 38, 41, 42, 43, 44, 48, 49, 54, 56, 59, 60, 61, 62, 64, 66, 68, 70, 71, 72, 74, 77, 81, 83, 86, 89, 97, 101, 112, 113, 117, 118, 123, 124, 125, 126, 128, 131, 136, 138, 145, 146, 148, 153, 156, 157, 161
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OFFSET

1,1


COMMENTS

The base for which n is a palindrome is given in A214427.


LINKS

T. D. Noe, Table of n, a(n) for n = 1..10000


FORMULA

A050812(n) = 1.


EXAMPLE

11 is palindromic only in base 10.


MATHEMATICA

n = 1; t = {}; While[Length[t] < 100, n++; If[Count[Table[s = IntegerDigits[n, m]; s == Reverse[s], {m, 2, 10}], True] == 1, AppendTo[t, n]]]; t


CROSSREFS

Cf. A050813, A214424, A214425, A214426 (palindromic in 0, 24 bases)
Sequence in context: A297143 A138595 A192271 * A185300 A097932 A031300
Adjacent sequences: A214420 A214421 A214422 * A214424 A214425 A214426


KEYWORD

nonn,base


AUTHOR

T. D. Noe, Jul 18 2012


STATUS

approved



