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A327427 Record gaps between primes which are palindromic in base 10. 3
1, 2, 4, 90, 122, 344, 9372, 10112, 30914, 904312, 1002012, 3015114, 90040102, 100020012, 300141014, 9000772002, 10002210012, 30007060014, 900008800002, 1000014100012, 3000012000014, 90000335100002, 100000060000012, 300000181000014, 9000000712000002, 10000002210000012, 30000003520000014 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

These are the gaps A002385(n+1) - A002385(n). The Banks et al. paper shows that this sequence is infinite if there exists an infinite number of palindromic primes.

LINKS

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

W. D. Banks, D. N. Hart, M. Sakata, Almost all palindromes are composite, Math. Res. Lett., 11 No. 5-6 (2004), 853-868.

CROSSREFS

Cf. A002385, A005250.

Sequence in context: A009277 A018410 A270484 * A335571 A335291 A156496

Adjacent sequences:  A327424 A327425 A327426 * A327428 A327429 A327430

KEYWORD

nonn

AUTHOR

Chai Wah Wu, Sep 09 2019

STATUS

approved

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Last modified June 17 13:43 EDT 2021. Contains 345080 sequences. (Running on oeis4.)