This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

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