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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 1), (1, 0, 1)}.
A150511
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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =102a(5) =421a(6) =1835a(7) =8068a(8) =36463a(9) =165906a(10) =766789a(11) =3562740a(12) =16714944a(13) =78749841a(14) =373407046a(15) =1776555853a(16) =8490305807a(17) =40686783270a(18) =195617231802a(19) =942606575327
External references
- oeis: A150511