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), (-1, 0, 0), (-1, 1, 1), (0, 0, 1), (1, 0, -1)}.
A148296
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), (-1, 0, 0), (-1, 1, 1), (0, 0, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =13a(5) =36a(6) =111a(7) =347a(8) =1134a(9) =3832a(10) =13126a(11) =46281a(12) =165283a(13) =598401a(14) =2202404a(15) =8168642a(16) =30653724a(17) =116082962a(18) =442503542a(19) =1701654889a(20) =6580937039a(21) =25603715395a(22) =100223117080a(23) =394001755683
External references
- oeis: A148296