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A054838 Fifth term of weak prime septet: p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1) < p(m+1)-p(m) < p(m+2)-p(m+1). 4

%I #8 Oct 27 2018 14:09:23

%S 15401,64951,68227,68917,129001,129011,143537,154111,158029,192407,

%T 221737,222437,244493,249763,285343,318701,337301,354391,357883,

%U 374219,385417,394747,402601,402613,419623,439199,441953,448421,457421,457697,458219,482527,528001

%N Fifth term of weak prime septet: p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1) < p(m+1)-p(m) < p(m+2)-p(m+1).

%H Harvey P. Dale, <a href="/A054838/b054838.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) = A151800(A054837(n)) = A151799(A054839(n)), A151800 = nextprime, A151799 = prevprime; A054838 = { m = A054831(n) | m = nextprime(A054831(n-1)) }. - _M. F. Hasler_, Oct 27 2018

%t Select[Partition[Prime[Range[7000]],7,1],Min[Differences[#,2]]>0&][[All,5]] (* _Harvey P. Dale_, Oct 15 2016 *)

%Y Cf. A051635; A054800 .. A054803: members of balanced prime quartets (= consecutive primes in arithmetic progression); A054804 .. A054818: members of strong prime quartet, quintet, sextet; A054819 .. A054840: members of weak prime quartet, quintet, sextet, septets.

%K nonn

%O 1,1

%A _Henry Bottomley_, Apr 10 2000

%E More terms from _Harvey P. Dale_, Oct 15 2016

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Last modified April 23 13:51 EDT 2024. Contains 371914 sequences. (Running on oeis4.)