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), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.
A150436
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), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =99a(5) =407a(6) =1776a(7) =7835a(8) =35400a(9) =161472a(10) =746382a(11) =3474604a(12) =16300338a(13) =76908464a(14) =364715409a(15) =1736718508a(16) =8301812970a(17) =39807939808a(18) =191423730408a(19) =922824490028
External references
- oeis: A150436