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

126, 15190, 15924, 17180, 23047, 24410, 33553, 44049, 51019, 54358, 74240, 77460, 102494, 103168, 128522, 154518, 156386, 186056, 232346, 244086, 250216, 285095, 291306, 320942, 447634, 465803, 477517, 478415, 508078, 518164, 518861, 526764, 587712, 589208

Offset: 1

Author

Zak Seidov, Feb 15 2015

Keywords

• nonn

Comments

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

Links

• Andrew Howroyd, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A072473, A072715, A255171.

Programs

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

Extensions

Terms a(19) and beyond from Andrew Howroyd, Nov 11 2018