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, 0, 1), (-1, 1, 0), (0, 0, 1), (1, -1, 0), (1, 0, -1)}.
A148324
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, 0, 1), (-1, 1, 0), (0, 0, 1), (1, -1, 0), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =41a(6) =136a(7) =453a(8) =1625a(9) =5916a(10) =22413a(11) =86262a(12) =341145a(13) =1364600a(14) =5575554a(15) =22970257a(16) =96219317a(17) =405776643a(18) =1733558159a(19) =7449181815a(20) =32339997454a(21) =141107551277a(22) =620848468901
External references
- oeis: A148324