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, 1), (0, 1, 0), (1, -1, 1), (1, 1, 0)}.
A150432
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, 1), (0, 1, 0), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =98a(5) =407a(6) =1740a(7) =7626a(8) =34019a(9) =154027a(10) =702375a(11) =3238330a(12) =15036002a(13) =70193322a(14) =329372882a(15) =1552973839a(16) =7351786503a(17) =34904153493a(18) =166258508011a(19) =794139913006
External references
- oeis: A150432