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Search: id:A158054
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| A158054 |
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a(1)=2, a(n+1) is the smallest prime > n*sum of digits of a(n). |
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+0
1
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| 2, 3, 7, 23, 23, 29, 67, 97, 131, 47, 113, 59, 173, 149, 197, 257, 227, 191, 193, 367, 331, 149, 311, 127, 241, 179, 443, 307, 281, 331, 211, 157, 419, 463, 443, 389, 727, 593, 647, 673, 641, 457, 673, 691, 709, 727, 739, 907, 769, 1078, 809, 877, 1151, 431, 433
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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2, 3(>2=1*2), 7(>6=2*3), 23(>21=3*7), 23(>20=4*2+4*3), 29(>25=5*2*+5*3), 67(>6*2+6*9), 97(>91=7*6+7*7), 131(>128=8*9+8*7), 47(>45=9*1+9*3+9*1)
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CROSSREFS
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Cf. A000027, A000040, A156615.
Sequence in context: A007660 A158055 A156615 this_sequence A134412 A005115 A113872
Adjacent sequences: A158051 A158052 A158053 this_sequence A158055 A158056 A158057
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KEYWORD
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nonn
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)ranbler.ru), Mar 12 2009
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