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A255172 Integers n such that A072473(n) = A072473(n+1) = A072473(n+2) = A072473(n+3). 1

%I

%S 126,15190,15924,17180,23047,24410,33553,44049,51019,54358,74240,

%T 77460,102494,103168,128522,154518,156386,186056,232346,244086,250216,

%U 285095,291306,320942,447634,465803,477517,478415,508078,518164,518861,526764,587712,589208

%N Integers n such that A072473(n) = A072473(n+1) = A072473(n+2) = A072473(n+3).

%C Corresponding values of A072473(n): 900, 188790, 199218, 216630, 297504, 316572, 446890, 599998, 702990, 752700, 1052898, 1101480, 1488444, 1498860.

%H Andrew Howroyd, <a href="/A255172/b255172.txt">Table of n, a(n) for n = 1..1000</a>

%o (PARI) { my(p=0, q=0, k=0, r=0); for(n=1, 1e6, p=nextprime(1+p); q=nextprime(1+nextprime(1+q)); my(t=q-p); if(t<>r, r=t; k=0); k++; if(k>=4, print1(n+1-k, ", "))) } \\ _Andrew Howroyd_, Nov 11 2018

%Y Cf. A072473, A072715, A255171.

%K nonn,changed

%O 1,1

%A _Zak Seidov_, Feb 15 2015

%E Terms a(19) and beyond from _Andrew Howroyd_, Nov 11 2018

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Last modified November 14 09:49 EST 2018. Contains 317182 sequences. (Running on oeis4.)