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, -1), (-1, 0, 0), (0, -1, 1), (1, 0, 1), (1, 1, 0)}.
A150481
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, -1), (-1, 0, 0), (0, -1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =100a(5) =399a(6) =1660a(7) =7028a(8) =30265a(9) =131548a(10) =577067a(11) =2554851a(12) =11384675a(13) =51011848a(14) =229590201a(15) =1038105708a(16) =4711833524a(17) =21456575383a(18) =97983632503a(19) =448663687172
External references
- oeis: A150481