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A005921
From solution to a difference equation.
(Formerly M2871)
+0
2
1, 3, 10, 48, 312, 2520, 24480, 277200, 3588480, 52254720, 845510400, 15048633600, 292190976000, 6146069529600, 139223731046400, 3379030566912000, 87478184521728000, 2406225451069440000, 70080382582898688000
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 5 08:23 EST 2009. Contains 170348 sequences.
AT&T Labs Research
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