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Search: id:A117952
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| A117952 |
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Perrin numbers which are divisible by the sum of their digits. |
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+0
1
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| 2, 3, 5, 7, 10, 12, 90, 209, 486, 644, 1130, 3480, 963935, 5209407, 3233514234548132, 1012112601190792234002, 18348324030778496342550922713690, 2107377545862489429119439140954710648307, 842301502360957349559574408551746623721263774871322
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a(n)=A001608(k): A007953(a(n)) | a(n) for some k. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 02 2006
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EXAMPLE
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963935 is in the sequence because (1) it is a Perrin number, (2) the sum of the digits is 9+6+3+9+3+5=35 and (3) 963935 is divisible by 35.
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CROSSREFS
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Cf. A001608.
Sequence in context: A002822 A109598 A117959 this_sequence A064509 A096221 A120367
Adjacent sequences: A117949 A117950 A117951 this_sequence A117953 A117954 A117955
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KEYWORD
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base,nonn
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AUTHOR
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Luc Stevens (lms022(AT)yahoo.com), May 03 2006
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 02 2006
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