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A281448 Initial primes of 9 consecutive primes with consecutive gaps 2, 4, 6, 8, 10, 12, 14, 16. 1

%I #34 Jan 28 2017 15:31:07

%S 113575727,232728647,2426256797,2469604721,3344410367,4656098957,

%T 4952808461,6369321857,6430890287,6760087151,8518049207,10818813737,

%U 13195845317,19684555061,21884908931,23953276661,25509639137,26367829331,26390212061,31004257211

%N Initial primes of 9 consecutive primes with consecutive gaps 2, 4, 6, 8, 10, 12, 14, 16.

%H Charles R Greathouse IV, <a href="/A281448/b281448.txt">Table of n, a(n) for n = 1..174</a>

%t Select[Partition[Prime[Range[20*10^7]], 9, 1], Differences[#] == 2*Range[8] &][[All, 1]]

%o (PARI) g=0; p=2; forprime(q=3,, if(q-p==g+2, g+=2; if(g==16, print1(q-72", "); g=0), g=0); p=q) \\ _Charles R Greathouse IV_, Jan 28 2017

%Y Cf. A078847, A190814, A190817, A190819, A190838.

%K nonn

%O 1,1

%A _Harvey P. Dale_, Jan 27 2017

%E a(10)-a(20) from _Charles R Greathouse IV_, Jan 28 2017

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Last modified April 24 19:39 EDT 2024. Contains 371963 sequences. (Running on oeis4.)