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), (-1, 1, 1), (0, -1, 1), (1, 0, -1), (1, 1, 1)}.
A149790
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), (-1, 1, 1), (0, -1, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =19a(4) =83a(5) =359a(6) =1625a(7) =7371a(8) =34221a(9) =159265a(10) =750635a(11) =3549039a(12) =16901211a(13) =80719115a(14) =387326417a(15) =1862934899a(16) =8989681705a(17) =43464846179a(18) =210653684411
External references
- oeis: A149790