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, 0, 1), (0, 0, -1), (0, 1, 0), (1, 1, 1)}.
A150598
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, 0, 1), (0, 0, -1), (0, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =109a(5) =450a(6) =1903a(7) =8194a(8) =35741a(9) =157344a(10) =697999a(11) =3116893a(12) =13996825a(13) =63151172a(14) =286073655a(15) =1300481403a(16) =5930501397a(17) =27120076624a(18) =124329033703a(19) =571252051435
External references
- oeis: A150598