|
|
A182212
|
|
a(n) = floor(n! / Fibonacci(n)).
|
|
1
|
|
|
1, 2, 3, 8, 24, 90, 387, 1920, 10672, 65978, 448503, 3326400, 26725411, 231242151, 2143728472, 21198368680, 222722246772, 2477698802526, 29094738198716, 359630747697951, 4667544506825273, 63463425429259086, 902118740233973431, 13380961044971520000
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
LINKS
|
|
|
FORMULA
|
a(n) = floor(A000142(n) / A000045(n)) = floor( n! / fibonacci(n) ), n>0.
|
|
EXAMPLE
|
a(7) = floor(7! / Fibonacci[7]) = floor(5040/13) = 387. - T. D. Noe, Apr 19 2012
|
|
MATHEMATICA
|
Table[Floor[n!/Fibonacci[n]], {n, 50}] (* T. D. Noe, Apr 19 2012 *)
|
|
PROG
|
(Python)
prpr = 0
prev = 1
fa = 1
for i in range(2, 26):
print(fa//prev, end=', ')
fa *= i
current = prev + prpr
prpr = prev
prev = current
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|