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), (1, -1, 0), (1, 0, 0), (1, 1, 1)}.
A150527
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), (1, -1, 0), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =105a(5) =430a(6) =1883a(7) =8150a(8) =36871a(9) =165204a(10) =760581a(11) =3474627a(12) =16196821a(13) =75099198a(14) =353396775a(15) =1655423497a(16) =7842616259a(17) =37030645474a(18) =176429662765a(19) =838297230441
External references
- oeis: A150527