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, -1, 0), (0, 1, 0), (0, 1, 1), (1, 0, 1)}.
A151045
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, -1, 0), (0, 1, 0), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =35a(4) =141a(5) =551a(6) =2329a(7) =9995a(8) =42101a(9) =184463a(10) =815153a(11) =3557395a(12) =15904077a(13) =71496471a(14) =318526473a(15) =1442648027a(16) =6559367461a(17) =29621184159a(18) =135382970721a(19) =620554541987
External references
- oeis: A151045