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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

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Last modified December 8 12:07 EST 2019. Contains 329862 sequences. (Running on oeis4.)