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, 0), (0, -1, 1), (0, 1, 0), (1, 1, -1), (1, 1, 0)}.
A150490
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, 0), (0, -1, 1), (0, 1, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =100a(5) =415a(6) =1780a(7) =7828a(8) =35049a(9) =159130a(10) =731046a(11) =3388538a(12) =15828654a(13) =74412622a(14) =351707896a(15) =1670101997a(16) =7962271051a(17) =38092843336a(18) =182802208891a(19) =879609895990
External references
- oeis: A150490