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A114013
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Least multiple of prime(n) ending in digit 9.
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0
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49, 99, 39, 119, 19, 69, 29, 279, 259, 369, 129, 329, 159, 59, 549, 469, 639, 219, 79, 249, 89, 679, 909, 309, 749, 109, 339, 889, 1179, 959, 139, 149, 1359, 1099, 489, 1169, 519, 179, 1629, 1719, 579, 1379, 199, 1899, 669, 1589, 229, 699, 239, 2169, 2259
(list; graph; refs; listen; history; internal format)
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OFFSET
| 4,1
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COMMENTS
| Subsidiary sequences: (1) least multiple of prime(n) ending in 2 or 3 or ..., or 8; (2) divide the above sequences by prime(n).
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MATHEMATICA
| f[n_] := Block[{k = 1, p = Prime[n]}, While[Mod[k*p, 10] != 9, k++ ]; k*p]; Table[ f[n], {n, 4, 54}] (* Robert G. Wilson v *)
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CROSSREFS
| Cf. A114011, A114012.
Sequence in context: A043394 A044519 A031484 * A161689 A019547 A067673
Adjacent sequences: A114010 A114011 A114012 * A114014 A114015 A114016
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 12 2005
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EXTENSIONS
| More terms from Robert G. Wilson v (rgwv(at)rgwv.com), Nov 17 2005
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