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A110655 a(n) = A110654(A110654(n)). 4
0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,6
COMMENTS
a(n) = A008621(n+1) = A002265(n+3).
A110656(n) = A110654(a(n)) = a(A110654(n)).
LINKS
FORMULA
a(n) = ceiling(n/4).
From Chai Wah Wu, May 29 2016: (Start)
a(n) = a(n-1) + a(n-4) - a(n-5) for n>4.
G.f.: x/(x^5 - x^4 - x + 1). (End)
MAPLE
A110655:=n->ceil(n/4): seq(A110655(n), n=0..100); # Wesley Ivan Hurt, May 29 2016
MATHEMATICA
CoefficientList[Series[x/(x^5 - x^4 - x + 1), {x, 0, 100}], x] (* Wesley Ivan Hurt, May 29 2016 *)
LinearRecurrence[{1, 0, 0, 1, -1}, {0, 1, 1, 1, 1}, 50] (* G. C. Greubel, May 29 2016 *)
CROSSREFS
Sequence in context: A359276 A002265 A242601 * A008621 A144075 A128929
KEYWORD
nonn,easy
AUTHOR
Reinhard Zumkeller, Aug 05 2005
STATUS
approved

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Last modified May 23 05:11 EDT 2024. Contains 372758 sequences. (Running on oeis4.)