A090272 Take each palindrome ending in 1, 3, 7, or 9 and find smallest prime formed by the digits of that palindrome, followed by a string of digits, followed by the palindrome again.

11, 313, 727, 919, 11311, 33533, 77377, 990599, 10101101, 1114111, 1212121, 1311131, 1411141, 1513151, 1611161, 1712171, 18102181, 1917191, 30301303, 3135313, 3233323, 3331333, 3439343, 35301353, 3635363, 3732373, 3836383

Offset

1,1

Links

Table of n, a(n) for n=1..27.

Example

Prime pertaining to 11 is 11311 and that pertaining to 99 is 990599.

Crossrefs

Cf. A090270, A090272.

Sequence in context: A060495 A251589 A070278 * A090271 A267753 A233241

Adjacent sequences: A090269 A090270 A090271 * A090273 A090274 A090275

Keyword

base,nonn

Author

Amarnath Murthy, Nov 28 2003

Extensions

More terms from Joshua Zucker, May 03 2006

Status

approved