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), (0, 0, -1), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
A150672
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), (0, 0, -1), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =25a(4) =106a(5) =395a(6) =1751a(7) =7102a(8) =32307a(9) =137670a(10) =637149a(11) =2803758a(12) =13133090a(13) =59097808a(14) =279289457a(15) =1277502206a(16) =6078548478a(17) =28151385024a(18) =134670239366a(19) =629777131128
External references
- oeis: A150672