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A156672
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a(1)=2, a(n+1) is the smallest prime >= a(n) + sum of digits of a(n).
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2
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2, 5, 11, 13, 17, 29, 41, 47, 59, 73, 83, 97, 113, 127, 137, 149, 163, 173, 191, 211, 223, 233, 241, 251, 263, 277, 293, 307, 317, 331, 347, 367, 383, 397, 419, 433, 443, 457, 479, 499, 521, 541, 557, 577, 599, 631, 641, 653, 673, 691, 709, 727, 743, 757, 787
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Heuristically, a(n) ~ kn log n for some k >= 4.5/log 10.
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EXAMPLE
| 2, 5(>4=2+2), 11(>10>5+5), 13(=13=11+1+1), 17(=17=13+1+3), 29(>25=17+1+7), etc.
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CROSSREFS
| Cf. A156604.
Sequence in context: A019387 A019337 A086518 * A145669 A139019 A031869
Adjacent sequences: A156669 A156670 A156671 * A156673 A156674 A156675
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KEYWORD
| nonn,base,less
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AUTHOR
| Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Feb 13 2009
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EXTENSIONS
| Corrected by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Mar 19 2010
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