|
| |
|
|
A152833
|
|
a(0)=3; a(n)=n-a(n-1).
|
|
7
| |
|
|
-3, 4, -2, 5, -1, 6, 0, 7, 1, 8, 2, 9, 3, 10, 4, 11, 5, 12, 6, 13, 7, 14, 8, 15, 9, 16, 10, 17, 11, 18, 12, 19, 13, 20, 14, 21, 15, 22, 16, 23, 17, 24, 18, 25, 19, 26, 20, 27, 21, 28, 22, 29, 23, 30, 24, 31, 25, 32, 26, 33, 27, 34, 28, 35, 29, 36, 30, 37, 31, 38, 32, 39, 33, 40, 34
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,1
|
|
|
FORMULA
| a(n)=(2n+1-13*(-1)^n)/4. G.f.: -(3-7x+3x^2)/((1+x)(1-x)^2). - R. J. Mathar, Jan 08 2009
|
|
|
MATHEMATICA
| lst={}; a=3; Do[a=n-a; AppendTo[lst, a], {n, 0, 6!}]; lst
|
|
|
CROSSREFS
| Cf. A084964, A152832.
Sequence in context: A021296 A078069 A090131 * A139525 A133570 A117041
Adjacent sequences: A152830 A152831 A152832 * A152834 A152835 A152836
|
|
|
KEYWORD
| sign
|
|
|
AUTHOR
| Vladimir Orlovsky (4vladimir(AT)gmail.com), Dec 14 2008
|
|
|
EXTENSIONS
| Indices added to definition, offset corrected - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 08 2009
|
| |
|
|
