A178565 - OEIS

A178565

Numbers n for which the set {210*n-19, 210*n-17, 210*n-13, 210*n-11, 210*n-1, 210*n+1, 210*n+11, 210*n+13, 210*n+17, 210*n+19} forms a symmetrical prime decuplet (also known as Federighi cluster).

%I #3 Oct 28 2021 13:09:16

%S 189111589,316283205,340596403,1363676123,2288631107,2548484492,

%T 3761774969,5693215546,5806904514,5983441966,6153368797,6435606987,

%U 6909440949,6955203039,7216006868,7582600736,7657322028,9403678002

%N Numbers n for which the set {210*n-19, 210*n-17, 210*n-13, 210*n-11, 210*n-1, 210*n+1, 210*n+11, 210*n+13, 210*n+17, 210*n+19} forms a symmetrical prime decuplet (also known as Federighi cluster).

%C n is always +/- 4 (mod 11).

%H Thomas R. Nicely, <a href="https://faculty.lynchburg.edu/~nicely/dense/dense1.html">Dense prime clusters</a>

%Y Cf. A145315

%K nonn

%O 1,1

%A _Andrey V. Kulsha_, May 29 2010