login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A227397 Related to Pisano periods: Numbers n such that the period of Fibonacci numbers mod n equals n+2. 1
4, 34, 46, 94, 106, 166, 226, 274, 334, 346, 394, 454, 514, 526, 586, 634, 694, 706, 766, 886, 934, 1006, 1126, 1174, 1186, 1234, 1294, 1306, 1354, 1366, 1486, 1546, 1654, 1714, 1726, 1774, 1894, 1954, 1966, 2026, 2326, 2374, 2386, 2434, 2566, 2614, 2734, 2746 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This sequence is a subset of A220168, where n divides the Fibonacci number F(n+2).  There is no discernible pattern for which A220168 terms are not in this sequence.

All terms are 2 less than a multiple of 6, and all except the first term (4) are 2 less than a multiple of 12.

LINKS

Matthew Goers, Table of n, a(n) for n = 1..125

EXAMPLE

The Pisano period [A001175] for dividing the Fibonacci numbers [A000045] by 4 is 6, which is 2 more.

The Pisano period for the Fibonacci numbers mod 34 is 36.

CROSSREFS

A000045, A001175, A220168, A071776

Sequence in context: A102959 A057959 A220168 * A281827 A284812 A053902

Adjacent sequences:  A227394 A227395 A227396 * A227398 A227399 A227400

KEYWORD

nonn

AUTHOR

Matthew Goers, Sep 20 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 21 12:12 EDT 2020. Contains 337271 sequences. (Running on oeis4.)