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A165813 a(n) = n*(a(n-1)+3), a(0)=1. 2
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; text; internal format)
OFFSET
0,2
LINKS
FORMULA
a(n) = n! + 3*floor(e*n!) - 3. - Gary Detlefs, Jun 06 2010
MATHEMATICA
FoldList[#1*#2 + 3 #2 &, 1, Range[19]] (* Robert G. Wilson v, Jul 07 2012 *)
CROSSREFS
Sequence in context: A292463 A149488 A058692 * A253199 A198279 A211307
KEYWORD
nonn
AUTHOR
Philippe Deléham, Sep 28 2009
STATUS
approved

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)