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, 1, -1), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.
A150529
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, 1, -1), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =106a(5) =437a(6) =1929a(7) =8488a(8) =38396a(9) =174507a(10) =803900a(11) =3722663a(12) =17371905a(13) =81437630a(14) =383684351a(15) =1814422663a(16) =8611181387a(17) =40990036508a(18) =195652384453a(19) =936119745972
External references
- oeis: A150529