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A165813 a(n)=n*(a(n-1)+3), a(0)=1. 1
1, 4, 14, 51, 216, 1095, 6588, 46137, 369120, 3322107, 33221100, 365432133, 4385185632, 57007413255, 798103785612, 11971556784225, 191544908547648, 3256263445310067, 58612742015581260, 1113642098296043997 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n) = n!+3*floor(e*n!)-3 [From Gary Detlefs (gdetlefs(AT)aol.com), Jun 06 2010]

CROSSREFS

Cf. A000142, A033540, A165792

Sequence in context: A096241 A149488 A058692 * A198279 A099486 A047033

Adjacent sequences:  A165810 A165811 A165812 * A165814 A165815 A165816

KEYWORD

nonn

AUTHOR

Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Sep 28 2009

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.