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Search: id:A165771
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| A165771 |
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Smallest positive integer such that a(1)+...a(n) divides 123...n (=A007908(n)) |
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+0
3
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| 1, 1, 1, 614, 206, 463, 8435, 4872, 17870, 1234535428, 182846450, 693391108, 96110089192, 205761216947625578, 8024691291572288542, 3078189274921062476618, 5669380917941142205058, 61952555082544875480446
(list; graph; listen)
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OFFSET
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1,4
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COMMENT
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Without the initial term, these are the first differences of A165770.
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LINKS
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John W. Layman, Re: Sum divides concatenation, SeqFan list, Sep 30 2009.
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PROGRAM
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(PARI) c=""; s=0; for(i=1, 19, fordiv(c=eval(Str(c, i)), d, d>s | next; print1(d-s, ", "); s=d; break))
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CROSSREFS
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Cf. A151995, A165770, A166064.
Sequence in context: A020372 A032657 A117503 this_sequence A025329 A108818 A020377
Adjacent sequences: A165768 A165769 A165770 this_sequence A165772 A165773 A165774
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KEYWORD
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nonn
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AUTHOR
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M. F. Hasler (MHasler(AT)univ-ag.fr), Sep 30 2009
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