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Search: id:A078286
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| A078286 |
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Least nontrivial multiple of the n-th prime beginning with 2. |
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+0
9
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| 20, 21, 20, 21, 22, 26, 204, 209, 207, 203, 217, 222, 205, 215, 235, 212, 236, 244, 201, 213, 219, 237, 249, 267, 291, 202, 206, 214, 218, 226, 254, 262, 274, 278, 298, 2114, 2041, 2119, 2004, 2076, 2148, 2172, 2101, 2123, 2167, 2189, 2110, 2007, 2043, 2061
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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f[n_] := Block[{k = 2, m = n}, While[ IntegerDigits[k*m][[1]] != 2, k++ ]; k*m]; Table[ f[ Prime[n]], {n, 1, 55}]
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CROSSREFS
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Cf. A078285, A078287, A078288, A078289, A078290, A078291, A078292, A078293.
Sequence in context: A022354 A165841 A091235 this_sequence A004461 A008553 A007930
Adjacent sequences: A078283 A078284 A078285 this_sequence A078287 A078288 A078289
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KEYWORD
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base,easy,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 26 2002
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EXTENSIONS
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Edited and extended by Robert G. Wilson (rgwv(AT)rgwv.com), Nov 29 2002
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