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, 1, -1), (0, 0, 1), (1, 0, 1), (1, 1, -1)}.
A150372
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, 1, -1), (0, 0, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =94a(5) =372a(6) =1601a(7) =6859a(8) =30453a(9) =135845a(10) =616764a(11) =2817542a(12) =12999781a(13) =60321173a(14) =281686783a(15) =1321486207a(16) =6227878448a(17) =29458162344a(18) =139817921161a(19) =665585392406
External references
- oeis: A150372