Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, -1), (1, -1, 0), (1, 0, 1), (1, 1, 1)}.
A150746
Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, -1), (1, -1, 0), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =126a(5) =524a(6) =2387a(7) =10508a(8) =49101a(9) =223021a(10) =1057598a(11) =4901311a(12) =23459371a(13) =110213887a(14) =531005794a(15) =2519326762a(16) =12197210656a(17) =58298225132a(18) =283303981460
External references
- oeis: A150746