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A073829 4*((n-1)!+1)+n. 2
9, 10, 15, 32, 105, 490, 2891, 20172, 161293, 1451534, 14515215, 159667216, 1916006417, 24908083218, 348713164819, 5230697472020, 83691159552021, 1422749712384022, 25609494822912023, 486580401635328024 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

See A073830 for motivation. Cf. A000142.

Sequence in context: A175090 A197113 A099616 * A003135 A105742 A105834

Adjacent sequences:  A073826 A073827 A073828 * A073830 A073831 A073832

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 12 2002

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.