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A007763 Number of length n permutations achievable by double-ended priority queue. 0
1, 4, 32, 392, 6488, 135360 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A051489 A047053 A201594 * A195193 A203435 A005263

Adjacent sequences:  A007760 A007761 A007762 * A007764 A007765 A007766

KEYWORD

nonn

AUTHOR

mda(AT)cs.st-andrews.ac.uk (Michael Atkinson)

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.