A072314 Smallest Fibonacci number containing exactly n 9's.

89, 39088169, 32951280099, 190392490709135, 99194853094755497, 31940434634990099905, 394810887814999156320699623170776339, 199387062373213542599493807777207997205533596336, 1409869790947669143312035591975596518914, 7084593923980518516849609894969925639

Offset

1,1

Links

Table of n, a(n) for n=1..10.

Example

a(2)=39088169 so 39088169 is the smallest Fibonacci number containing exactly two 9's.

Mathematica

With[{c={#, DigitCount[#, 10, 9]}&/@Fibonacci[Range[500]]}, Table[ SelectFirst [c, #[[2]]==n&], {n, 10}]][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Apr 16 2019 *)

Crossrefs

Sequence in context: A287054 A080051 A243316 * A087538 A087341 A093405

Adjacent sequences: A072311 A072312 A072313 * A072315 A072316 A072317

Keyword

base,nonn

Author

Shyam Sunder Gupta, Jul 14 2002

Extensions

More terms from Harvey P. Dale, Jul 23 2002

Status

approved