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, -1, 1), (1, 0, 0), (1, 1, 0)}.
A150337
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, -1, 1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =86a(5) =324a(6) =1299a(7) =5220a(8) =21719a(9) =90339a(10) =384266a(11) =1636936a(12) =7082536a(13) =30702416a(14) =134564005a(15) =590760674a(16) =2614779499a(17) =11592637398a(18) =51721170509a(19) =231138434046
External references
- oeis: A150337