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A145701 Lesser p of twin primes (p,q) such that there exists an integer between sqrt(2p) and sqrt(2q) 3
3, 11, 17, 59, 71, 179, 311, 419, 881, 1151, 2111, 2591, 3119, 3527, 4049, 5099, 15137, 20807, 21011, 21839, 24419, 30011, 34847, 37811, 41759, 44699, 46817, 60899, 68819, 69191, 83231, 83639, 86111, 100799, 103967, 112337, 135719, 143111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The n-th prime p_n is in the sequence iff A145236(n) = A145236(n+1).

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..500

MATHEMATICA

okQ[n_]:=Last[n]-First[n]==2&&Floor[Sqrt[2Last[n]]]>Sqrt[2First[n]]; Transpose[Select[Partition[Prime[Range[13300]], 2, 1], okQ]][[1]] (* Harvey P. Dale, Oct 26 2011 *)

CROSSREFS

Cf. A001359, A006512, A145236.

Sequence in context: A127996 A032008 A061368 * A072982 A124787 A080306

Adjacent sequences:  A145698 A145699 A145700 * A145702 A145703 A145704

KEYWORD

nonn

AUTHOR

Vladimir Shevelev, Oct 16 2008

EXTENSIONS

Extended by R. J. Mathar, Aug 02 2010

STATUS

approved

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Last modified January 27 09:09 EST 2020. Contains 331293 sequences. (Running on oeis4.)