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.

Previous Showing 11-14 of 14 results.

A111950 Smallest order n twin prime cluster.

Original entry on oeis.org

3, 5, 5, 9419, 909287, 325267931, 678771479, 1107819732821, 170669145704411, 3324648277099157, 789795449254776509
Offset: 1

Views

Author

Eric W. Weisstein, Aug 22 2005

Keywords

References

  • Paulo Ribenboim, The Little Book of Bigger Primes, Springer-Verlag NY 2004. See p. 196.

Crossrefs

Cf. A087641.

Extensions

a(11) from Tomáš Brada, added by Dmitry Petukhov, Aug 18 2023

A259034 Start of a string of exactly 9 consecutive (but disjoint) pairs of twin primes.

Original entry on oeis.org

170669145704411, 597655503030737, 1209758169609917, 1529543606818727, 1980326398382819, 2752137854763287, 3748062700238369, 4071945430128767, 4518517172328671, 4662894516572177, 5979435335619701, 6264049608329957, 7609375387833677, 8064845880680819
Offset: 1

Views

Author

Dmitry Petukhov, Nov 08 2015

Keywords

Crossrefs

Extensions

Terms a(6) and beyond from Tomáš Brada, Jun 04 2020

A102891 Start of the first string of exactly n consecutive pairs of cousin primes.

Original entry on oeis.org

67, 37, 7, 97, 853, 1654863667, 14865673633, 128433097567
Offset: 1

Views

Author

Rick L. Shepherd, Jan 16 2005

Keywords

Examples

			a(5) = 853 as the consecutive primes 853, 857, 859, 863, 877, 881, 883, 887, 907 and 911 form exactly five consecutive pairs (p, p+4) of cousin primes and no smaller string of consecutive primes has this property.
		

Crossrefs

Cf. A087641 (similar for twin primes), A095969, A095970, A095971.

Extensions

a(6)-a(8) from Donovan Johnson, Sep 03 2008

A335395 Start of a string of exactly 10 consecutive (but disjoint) pairs of twin primes.

Original entry on oeis.org

3324648277099157, 31910610414019031, 55016223757181177, 58714524586913549, 124129161487792607, 177564738317068181, 191369558592252011, 199330124393114021, 314398595062088219
Offset: 1

Views

Author

Tomáš Brada, Jun 05 2020

Keywords

Examples

			a(1) = A087641(10) = 3324648277099157, 3324648277099157 + s where s = {0, 2, 54, 56, 72, 74, 84, 86, 150, 152, 162, 164, 180, 182, 240, 242, 264, 266, 294, 296} are prime.
		

Crossrefs

Previous Showing 11-14 of 14 results.