|
| |
|
|
A151720
|
|
Number of two-dimensional three-sided prudent 2n-step returns.
|
|
2
|
|
|
|
0, 24, 240, 2544, 31800, 435864, 6323352, 95647104, 1493934516, 23934001600, 391427518152, 6511949001648
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
Table of n, a(n) for n=1..12.
Timothy M. Garoni, Anthony J. Guttmann, Iwan Jensen, John C. Dethridge, Prudent walks and polygons, J. Phys. A: Math. Theor. 42 (2009) 095205, Table 1.
|
|
|
CROSSREFS
|
Cf. A157519, A151719.
Sequence in context: A052724 A357242 A000536 * A052652 A052732 A267060
Adjacent sequences: A151717 A151718 A151719 * A151721 A151722 A151723
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
N. J. A. Sloane, Jun 11 2009
|
|
|
STATUS
|
approved
|
| |
|
|
