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A030955
a(n) = floor(exp(4/9)*n!).
1
1, 3, 9, 37, 187, 1122, 7860, 62884, 565956, 5659561, 62255179, 747062150, 9711807959, 135965311436, 2039479671550, 32631674744814, 554738470661843, 9985292471913189, 189720556966350594, 3794411139327011891
OFFSET
1,2
LINKS
MATHEMATICA
Array[Floor[Exp[4/9] #!] &, 20] (* Michael De Vlieger, Jan 30 2019 *)
CROSSREFS
Sequence in context: A009179 A030819 A030904 * A030856 A030943 A030803
KEYWORD
nonn
AUTHOR
STATUS
approved