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A025490
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Numbers k such that the sum of the digits of Fibonacci(k) in base 11 is k.
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3
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0, 1, 5, 13, 41, 53, 55, 60, 61, 90, 97, 169, 185, 193, 215, 265, 269, 353, 355, 385, 397, 437, 481, 493, 617, 629, 630, 653, 713, 750, 769, 780, 889, 905, 960, 1013, 1025, 1045, 1205, 1320, 1405, 1435, 1501, 1620, 1650, 1657, 1705, 1735, 1769, 1793, 1913, 1981
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OFFSET
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1,3
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COMMENTS
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In his article, Terr estimated the number of terms to be 684 +- 26, which agrees with the found count of 710. - Sven Simon, Aug 06 2006
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LINKS
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PROG
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(PARI) isok(n) = sumdigits(fibonacci(n), 11) == n; \\ Michel Marcus, Jun 08 2019
(Magma) [k:k in [0..2000]| &+Intseq(Fibonacci(k), 11) eq k]; // Marius A. Burtea, Jun 09 2019
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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EXTENSIONS
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Title clarified and offset changed to 1 by Sean A. Irvine, May 06 2019
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STATUS
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approved
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