%I #8 May 01 2013 21:09:56
%S 1,6,30,150,726,3510,16734,79518,375246,1766382,8278638,38721366,
%T 180556206,840524742,3903866526,18106798830,83832778110,387690560718,
%U 1790330065854,8259528315558,38059497518214,175228328442174,805959153119262,3704270575724550
%N Number of three-dimensional prudent n-step walks.
%H Timothy M. Garoni, Anthony J. Guttmann, Iwan Jensen, John C. Dethridge, <a href="http://dx.doi.org/10.1088/1751-8113/42/9/095205">Prudent walks and polygons</a>, J. Phys. A: Math. Theor. 42 (2009) 095205, Table 1.
%Y Cf. A151719, A151720.
%K nonn,walk
%O 0,2
%A _R. J. Mathar_, Mar 02 2009
%E Two more terms added from the Garoni et al. paper by _N. J. A. Sloane_, Jun 11 2009