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), (0, 1, 1), (1, 0, -1), (1, 0, 0)}.
A150279
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), (0, 1, 1), (1, 0, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =89a(5) =366a(6) =1561a(7) =6769a(8) =30039a(9) =134844a(10) =612578a(11) =2810228a(12) =12981757a(13) =60400299a(14) =282517353a(15) =1327885926a(16) =6268368794a(17) =29695994753a(18) =141157315621a(19) =672914374614
External references
- oeis: A150279