A211405 Prime numbers that in binary are palindromic and also have palindromic index.

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

Links

Table of n, a(n) for n=1..11.

Example

The binary representations of the first three terms and their indices are 101 and 11, 10001 and 111, and 1001001 and 10101.

Crossrefs

Cf. A046941, A016041.

Sequence in context: A149716 A324800 A146577 * A354040 A187823 A297625

Adjacent sequences: A211402 A211403 A211404 * A211406 A211407 A211408

Keyword

nonn,base

Author

James G. Merickel, Feb 09 2013

Extensions

a(11) from Giovanni Resta, Feb 12 2013

Status

approved