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, 0, 1), (1, 0, -1), (1, 1, 0)}.
A150470
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, 0, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =98a(5) =403a(6) =1711a(7) =7464a(8) =33175a(9) =149754a(10) =684058a(11) =3155132a(12) =14669665a(13) =68664134a(14) =323240314a(15) =1529158466a(16) =7264937874a(17) =34644069379a(18) =165748338880a(19) =795297442886
External references
- oeis: A150470