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, 0, 1), (0, 1, 0), (1, 1, 0)}.
A151055
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, 0, 1), (0, 1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =37a(4) =146a(5) =596a(6) =2488a(7) =10577a(8) =45621a(9) =198971a(10) =875546a(11) =3881695a(12) =17319136a(13) =77692349a(14) =350149137a(15) =1584522530a(16) =7196245139a(17) =32786815893a(18) =149806467269a(19) =686239704863
External references
- oeis: A151055