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 A229781 Common difference in sets of 3 consecutive palindromic primes (palprimes) in arithmetic progression. 0
 2, 30, 810, 300, 300, 3000, 3000, 3000, 3000, 3000, 8100, 3000, 3000, 3000, 81000, 30000, 30000, 30000, 81000, 111000, 30000, 30000, 30000, 30000, 81000, 111000, 30000, 30000, 30000, 81000, 111000, 30000, 30000, 30000, 111000, 30000, 141000, 81000, 81000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(2)=30 since (727, 757, 787) is the second arithmetic progression of 3 consecutive palindromic primes with common difference = 30. CROSSREFS Cf. A059120. Sequence in context: A278884 A013525 A270531 * A114938 A082653 A332231 Adjacent sequences:  A229778 A229779 A229780 * A229782 A229783 A229784 KEYWORD nonn,base AUTHOR Shyam Sunder Gupta, Sep 29 2013 STATUS approved

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Last modified December 7 06:09 EST 2021. Contains 349567 sequences. (Running on oeis4.)