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 A279062 Initial terms of the arithmetic progressions in A278735. 3
 3, 3, 5, 353, 13297, 1561423, 291461857 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The first set of 4 prime-indexed primes in arithmetic progression (353, 431, 509, and 587) contains consecutive terms of A142160. LINKS EXAMPLE a(4) = 353 because 353 = prime(prime(20)), 431 = prime(prime(23)), 509 = prime(prime(25)), 587 = prime(prime(28)), and 431-353 = 509-431 = 587-509 = 78. The corresponding arithmetic progressions are 3; 3, 5; 5, 11, 17; 353, 431, 509, 587; 13297, 21937, 30577, 39217, 47857; 1561423, 2716423, 3871423, 5026423, 6181423, 7336423; ... CROSSREFS Left border of A279021. Cf. A006450, A113827, A142160, A274825, A278735. Sequence in context: A248592 A132809 A265960 * A005882 A327824 A189915 Adjacent sequences:  A279059 A279060 A279061 * A279063 A279064 A279065 KEYWORD nonn,hard,more AUTHOR Bobby Jacobs, Dec 05 2016 EXTENSIONS a(7) from Charles R Greathouse IV, Dec 27 2016 STATUS approved

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Last modified January 20 11:11 EST 2020. Contains 331083 sequences. (Running on oeis4.)