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, 0, 0), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
A150784
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, 0, 0), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =30a(4) =134a(5) =571a(6) =2670a(7) =12050a(8) =57641a(9) =268306a(10) =1300437a(11) =6168383a(12) =30146565a(13) =144778919a(14) =711522834a(15) =3446669757a(16) =17004930040a(17) =82888652696a(18) =410104670917
External references
- oeis: A150784