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, 1), (-1, 0, 0), (1, 0, 1), (1, 1, 0)}.
A150375
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, 1), (-1, 0, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =96a(5) =354a(6) =1534a(7) =6066a(8) =27086a(9) =110747a(10) =501581a(11) =2106197a(12) =9652273a(13) =41197318a(14) =190177775a(15) =823152541a(16) =3823689704a(17) =16712997276a(18) =77975705509a(19) =343795036066
External references
- oeis: A150375