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, 0), (0, 1, -1), (1, 0, 1), (1, 1, 0), (1, 1, 1)}.
A151226
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, 0), (0, 1, -1), (1, 0, 1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =58a(4) =268a(5) =1274a(6) =6103a(7) =29578a(8) =144191a(9) =706114a(10) =3471529a(11) =17111174a(12) =84533573a(13) =418347563a(14) =2073295781a(15) =10287239649a(16) =51092700553a(17) =253964860179
External references
- oeis: A151226