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A054804 First term of strong prime quartets: prime(m+1)-prime(m) > prime(m+2)-prime(m+1) > prime(m+3)-prime(m+2). 19
31, 61, 89, 211, 271, 293, 449, 467, 607, 619, 709, 743, 839, 863, 919, 1069, 1291, 1409, 1439, 1459, 1531, 1637, 1657, 1669, 1723, 1759, 1777, 1831, 1847, 1861, 1979, 1987, 2039, 2131, 2311, 2357, 2371, 2447, 2459, 2477, 2503, 2521, 2557, 2593, 2633 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

First member of pairs of consecutive primes in A051634 ("strong primes"). - M. F. Hasler, Oct 27 2018

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

MAPLE

primes:= select(isprime, [seq(i, i=3..10000, 2)]):

L:=  primes[2..-1]-primes[1..-2]:

primes[select(t -> L[t+2] < L[t+1] and L[t+1] < L[t], [$1..nops(L)-2])]; # Robert Israel, Jun 28 2018

CROSSREFS

Cf. A051634, A054800-A054840.

Sequence in context: A095672 A073650 A078562 * A128470 A195744 A326896

Adjacent sequences:  A054801 A054802 A054803 * A054805 A054806 A054807

KEYWORD

nonn

AUTHOR

Henry Bottomley, Apr 10 2000

STATUS

approved

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Last modified December 16 04:05 EST 2019. Contains 330013 sequences. (Running on oeis4.)