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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: A052520 A052724 A000536 * A052652 A052732 A267060

Adjacent sequences:  A151717 A151718 A151719 * A151721 A151722 A151723

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 11 2009

STATUS

approved

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Last modified May 24 23:31 EDT 2020. Contains 334581 sequences. (Running on oeis4.)