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, 0), (-1, 0, 1), (-1, 1, -1), (0, 0, -1), (1, 0, 0)}.
A148124
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, 0), (-1, 0, 1), (-1, 1, -1), (0, 0, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =11a(5) =26a(6) =75a(7) =209a(8) =628a(9) =1883a(10) =5951a(11) =18686a(12) =60927a(13) =199714a(14) =664361a(15) =2240274a(16) =7643810a(17) =26202820a(18) =91110947a(19) =318663775a(20) =1120228682a(21) =3977941573a(22) =14197123531a(23) =50843366658a(24) =183631585543a(25) =665691578173
External references
- oeis: A148124