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A030433 Primes of form 10n+9. +0
16
19, 29, 59, 79, 89, 109, 139, 149, 179, 199, 229, 239, 269, 349, 359, 379, 389, 409, 419, 439, 449, 479, 499, 509, 569, 599, 619, 659, 709, 719, 739, 769, 809, 829, 839, 859, 919, 929, 1009, 1019, 1039, 1049, 1069, 1109, 1129, 1229, 1249, 1259, 1279, 1289 (list; graph; listen)
OFFSET

1,1

COMMENT

Also primes of form 5n+4.

LINKS

A. Granville and G. Martin, Prime number races

FORMULA

a(n) = 10*A102700(n) + 9.

Union of A132234 and A132236. [From Ray Chandler (rayjchandler(AT)sbcglobal.net), Apr 07 2009]

MATHEMATICA

Select[Prime@Range[210], Mod[ #, 10] == 9 &] (*Chandler*)

CROSSREFS

Cf. A045457, A049510, A102700.

Sequence in context: A106093 A084666 A004618 this_sequence A141311 A090148 A136071

Adjacent sequences: A030430 A030431 A030432 this_sequence A030434 A030435 A030436

KEYWORD

nonn

AUTHOR

Warut Roonguthai (warut822(AT)yahoo.com)

EXTENSIONS

Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 07 2006

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Last modified November 24 19:42 EST 2009. Contains 167435 sequences.


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