login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A067607 Number of pancake stacks requiring a maximum number of flips to order. 2
1, 1, 1, 3, 20, 2, 35, 455, 5804, 73232 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

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

Eric Weisstein's World of Mathematics, PancakeSorting

CROSSREFS

Cf. A058986.

Sequence in context: A092828 A117844 A260371 * A013332 A223282 A223480

Adjacent sequences:  A067604 A067605 A067606 * A067608 A067609 A067610

KEYWORD

nonn

AUTHOR

Eric W. Weisstein

EXTENSIONS

Corrected and extended by Rob Pratt, Feb 21 2004

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 December 16 12:31 EST 2018. Contains 318160 sequences. (Running on oeis4.)