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A030433
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Primes of form 10n+9.
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18
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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; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Also primes of form 5n+4.
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LINKS
| Michael B. Porter, Table of n, a(n) for n=0..100000
A. Granville and G. Martin, Prime number races
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FORMULA
| a(n) = 10*A102700(n) + 9.
Union of A132234 and A132236. [From Ray Chandler (rayjchandler(AT)sbcglobal.net), Apr 07 2009]
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MATHEMATICA
| Select[Prime@Range[210], Mod[ #, 10] == 9 &] (*Chandler*)
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CROSSREFS
| Cf. A045457, A049510, A102700.
Sequence in context: A106093 A084666 A004618 * A141311 A090148 A136071
Adjacent sequences: A030430 A030431 A030432 * A030434 A030435 A030436
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KEYWORD
| nonn
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AUTHOR
| Warut Roonguthai (warut822(AT)yahoo.com)
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EXTENSIONS
| Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 07 2006
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