Revision History for A005688
(Underlined text is an addition;
strikethrough text is a deletion.)
Showing entries 1-10
| older changes
|
|
|
|
#21 by Harvey P. Dale at Mon Aug 26 15:54:58 EDT 2019
|
|
|
|
#20 by Harvey P. Dale at Mon Aug 26 15:54:54 EDT 2019
|
| MATHEMATICA
|
LinearRecurrence[{2, 0, -2, 1, 2, -2, 0, 0, 0, -1}, {1, 2, 3, 5, 7, 10, 14, 20, 30, 45}, 40] (* Harvey P. Dale, Aug 26 2019 *)
|
| STATUS
|
approved
editing
|
|
|
|
#19 by R. J. Mathar at Tue Jun 11 06:53:25 EDT 2019
|
|
|
|
#18 by R. J. Mathar at Tue Jun 11 06:53:15 EDT 2019
|
| LINKS
|
<a href="/index/Rec#order_10">Index entries for linear recurrences with constant coefficients</a>, signature (2,0,-2,1,2,-2,0,0,0,-1).
|
| KEYWORD
|
nonn,easy
|
| STATUS
|
approved
editing
|
|
|
|
#17 by N. J. A. Sloane at Fri Nov 10 14:09:22 EST 2017
|
|
|
|
#16 by N. J. A. Sloane at Fri Nov 10 14:09:19 EST 2017
|
| LINKS
|
R. K. Guy, <a href="/A005251/a005251_1.pdf">Anyone for Twopins?</a>, in D. A. Klarner, editor, The Mathematical Gardner. Prindle, Weber and Schmidt, Boston, 1981, pp. 2-15. [Annotated scanned copy, with permission]
|
| EXTENSIONS
|
More terms from Johannes W. Meijer, Aug 24 2013
|
| STATUS
|
approved
editing
|
|
|
|
#15 by Charles R Greathouse IV at Wed Apr 30 01:30:30 EDT 2014
|
| FORMULA
|
G.f.: (x^5*(1-x^2+x^3-2*x^5-x^6-x^7-x^8-x^9))/((1-x^2-x^5)*(1-2*x+x^2-x^5)). - )). - _Ralf Stephan, _, Apr 22 2004
|
|
|
Discussion
|
Wed Apr 30
| 01:30
| OEIS Server: https://oeis.org/edit/global/2171
|
|
|
|
#14 by N. J. A. Sloane at Fri Mar 28 02:30:10 EDT 2014
|
| COMMENTS
|
The complete sequence by _R. K. Guy _ in "Anyone for Twopins?" starts with a(0) = 0, a(1) = 1, a(2) = 1, a(3) = 1 and a(4) =1. The formula for a(n) confirms these values. - Johannes W. Meijer, Aug 24 2013
|
|
|
Discussion
|
Fri Mar 28
| 02:30
| OEIS Server: https://oeis.org/edit/global/2135
|
|
|
|
#13 by Ralf Stephan at Sun Aug 25 05:16:27 EDT 2013
|
|
|
|
#12 by Joerg Arndt at Sun Aug 25 03:34:19 EDT 2013
|
|
|
|
|