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A072316 Smallest Fibonacci number containing exactly n 7's. 0
987, 377, 86267571272, 7778742049, 10284720757613717413913, 781774079430987230203437, 1725375039079340637797070384, 17978720198565577104981084195586024127087428957 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

a(2)=377 so 377 is the smallest Fibonacci number containing exactly two 7's.

MATHEMATICA

With[{f={#, DigitCount[#, 10, 7]}&/@Fibonacci[Range[400]]}, Table[ SelectFirst[ f, #[[2]] == n&], {n, 10}]][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Sep 20 2019 *)

CROSSREFS

Sequence in context: A163025 A069299 A248352 * A222351 A221696 A221128

Adjacent sequences:  A072313 A072314 A072315 * A072317 A072318 A072319

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta, Jul 14 2002

STATUS

approved

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Last modified September 18 16:20 EDT 2021. Contains 347528 sequences. (Running on oeis4.)