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A088281 a(1) =11; for n>1, palindromic primes in which a single digit is sandwiched between strings of 1's. 5
11, 101, 131, 151, 181, 191, 11311, 11411, 1114111, 1117111, 111181111, 111191111, 1111118111111, 111111151111111, 111111181111111, 111111111161111111111, 11111111111111611111111111111, 111111111111111111131111111111111111111 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

For n>1, near-repunit palindromic primes (or, palindromic terms of A105992). [From Lekraj Beedassy, Jun 05 2009]

LINKS

Table of n, a(n) for n=0..17.

CROSSREFS

Cf. A088282, A088283, A088284.

Sequence in context: A159613 A062332 A222723 * A068685 A109830 A052035

Adjacent sequences:  A088278 A088279 A088280 * A088282 A088283 A088284

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Sep 29 2003

EXTENSIONS

More terms from David Wasserman, Aug 03 2005

Edit the offset from 0 to 1. [From Lekraj Beedassy, Jun 05 2009]

STATUS

approved

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Last modified November 19 06:03 EST 2019. Contains 329310 sequences. (Running on oeis4.)