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A211405
Prime numbers that in binary are palindromic and also have palindromic index.
0
5, 17, 73, 127, 313, 1453, 22861, 28123, 296713, 309481, 2063947162127
OFFSET
1,1
COMMENTS
This has been searched through 2^33.
The index of a(11) is 75558337841. a(12) > 2^44. - Giovanni Resta, Feb 12 2013
EXAMPLE
The binary representations of the first three terms and their indices are 101 and 11, 10001 and 111, and 1001001 and 10101.
CROSSREFS
Sequence in context: A149716 A324800 A146577 * A354040 A187823 A297625
KEYWORD
nonn,base
AUTHOR
James G. Merickel, Feb 09 2013
EXTENSIONS
a(11) from Giovanni Resta, Feb 12 2013
STATUS
approved