cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A217797 Smallest member of Ormiston prime 5-tuple.

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%I A217797 #10 Feb 16 2025 08:33:18
%S A217797 20847942560791,21815124622913,35581541330719,40546521517819,
%T A217797 47950363950791,54808830290791,65923105730719,84573572180719,
%U A217797 85950417240719
%N A217797 Smallest member of Ormiston prime 5-tuple.
%C A217797 Searched up to 10^14.
%C A217797 On 11 October 2012 Jens Kruse Andersen found a 6-tuple starting at 166389896360719, which is likely to be the smallest.
%H A217797 Jens Kruse Andersen, <a href="http://primerecords.dk/ormiston_tuples.htm">Ormiston Tuples</a>
%H A217797 E. W. Weisstein, <a href="https://mathworld.wolfram.com/RearrangementPrimePair.html">MathWorld: Rearrangement Prime Pair</a>
%e A217797 a(1) is in the sequence since (20847942560791, 20847942560917, 20847942560971, 20847942561079, 20847942561097) are 5 consecutive primes whose decimal representations contain exactly the same digits.
%Y A217797 Cf. A072274 (Ormiston pairs), A075093 (Ormiston triples), A161160 (Ormiston quadruples).
%K A217797 nonn,base
%O A217797 1,1
%A A217797 _Giovanni Resta_, Oct 12 2012