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, 0), (0, -1, 0), (0, 0, 1), (1, 1, 0), (1, 1, 1)}.
A151229
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, 0), (0, -1, 0), (0, 0, 1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =59a(4) =273a(5) =1291a(6) =6189a(7) =29891a(8) =145249a(9) =709331a(10) =3476493a(11) =17086667a(12) =84178545a(13) =415508571a(14) =2054190637a(15) =10169032019a(16) =50397605313a(17) =250010003619
External references
- oeis: A151229