A214423 Numbers n palindromic in only one base b, 2 <= b <= 10.

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

Offset: 1

Author

T. D. Noe, Jul 18 2012

Keywords

• nonn
• base

Comments

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

Examples

			11 is palindromic only in base 10.
		

Links

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

Crossrefs

Cf. A050813, A214424, A214425, A214426 (palindromic in 0, 2-4 bases)

Programs

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

Formula

A050812(n) = 1.