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A077798 Palindromic wing primes (a.k.a. near-repdigit palindromes) of the general form a*(10^m-1)/9 +/- b*10^[ m/2 ]. 45
101, 131, 151, 181, 191, 313, 353, 373, 383, 727, 757, 787, 797, 919, 929, 11311, 11411, 33533, 77377, 77477, 77977, 1114111, 1117111, 3331333, 3337333, 7772777, 7774777, 7778777, 111181111, 111191111, 777767777, 77777677777, 99999199999 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Prime versus probable prime status and proofs are given in the author's table.

REFERENCES

C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9.

LINKS

Table of n, a(n) for n=1..33.

P. De Geest, PWP Reference Table

CROSSREFS

Cf. A077775-A077797.

Sequence in context: A052086 A154270 A056730 * A089360 A056728 A085112

Adjacent sequences:  A077795 A077796 A077797 * A077799 A077800 A077801

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Nov 16 2002.

EXTENSIONS

Offset corrected by Arkadiusz Wesolowski, Sep 13 2011

STATUS

approved

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Last modified December 19 01:34 EST 2014. Contains 252175 sequences.