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, 0), (-1, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.
A150294
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, 0), (-1, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =94a(5) =403a(6) =1762a(7) =7864a(8) =35690a(9) =164108a(10) =762357a(11) =3569242a(12) =16819681a(13) =79692636a(14) =379354005a(15) =1812988443a(16) =8694229731a(17) =41817451066a(18) =201659232415a(19) =974725502503
External references
- oeis: A150294