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, 0), (0, 1, 1), (1, -1, 1), (1, 0, 0), (1, 1, -1)}.
A150637
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, 0), (0, 1, 1), (1, -1, 1), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =115a(5) =514a(6) =2361a(7) =11054a(8) =52401a(9) =250772a(10) =1208727a(11) =5859153a(12) =28530895a(13) =139443346a(14) =683599043a(15) =3359701039a(16) =16546981423a(17) =81641739090a(18) =403427284767
External references
- oeis: A150637