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, 1), (0, 0, 1), (0, 1, 1), (1, -1, 0), (1, 1, -1)}.
A150635
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, 1), (0, 0, 1), (0, 1, 1), (1, -1, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =115a(5) =508a(6) =2316a(7) =10763a(8) =50764a(9) =241973a(10) =1162908a(11) =5624552a(12) =27341527a(13) =133450209a(14) =653513832a(15) =3209044168a(16) =15793688705a(17) =77879133254a(18) =384646053404
External references
- oeis: A150635