|
|
A092483
|
|
a(n) is the floor of the average of the 1st moment of all previous entries.
|
|
0
|
|
|
1, 1, 1, 2, 3, 5, 9, 17, 32, 60, 114, 218, 418, 803, 1549, 2995, 5802, 11263, 21900, 42648, 83163, 162366, 317352, 620906, 1215941, 2383244, 4674825, 9176508, 18025284, 35429006, 69677045, 137106444, 269928311, 531676976, 1047716394
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,4
|
|
LINKS
|
|
|
FORMULA
|
a(n)=floor(sum(j=1, n-1, j*a(j))/(n-1))
|
|
EXAMPLE
|
The sequence opens 1,1,1,2,3,5. a(7) = floor((1*1 + 2*1 + 3*1 + 4*2 + 5*3 + 6*5)/6) = floor((1 + 2 + 3 + 8 + 15 + 30)/6) = floor(59/6) = 9.
|
|
PROG
|
(PARI) for(i=2, 50, v[i]=floor(sum(j=1, i-1, j*v[j])/(i-1)))
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|