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A025490 Numbers k such that the sum of the digits of Fibonacci(k) in base 11 is k. 3
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

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

LINKS

Sven Simon, Table of n, a(n) for n = 1..711 [May be complete]

David Terr, On the Sums of Digits of Fibonacci Numbers, Fibonacci Quarterly 34, Aug. 1996, pp. 349-355.

PROG

(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

CROSSREFS

Cf. A020995 (base 10), A020996 (base 12).

Cf. A025491 (with Lucas numbers).

Sequence in context: A337336 A121872 A228922 * A216824 A230812 A087938

Adjacent sequences: A025487 A025488 A025489 * A025491 A025492 A025493

KEYWORD

base,nonn

AUTHOR

David W. Wilson

EXTENSIONS

Title clarified and offset changed to 1 by Sean A. Irvine, May 06 2019

STATUS

approved

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Last modified December 1 04:36 EST 2022. Contains 358454 sequences. (Running on oeis4.)