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, 1, 1), (0, 1, -1), (1, -1, 1), (1, 0, 0)}.
A148416
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, 1, 1), (0, 1, -1), (1, -1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =17a(5) =61a(6) =234a(7) =935a(8) =3834a(9) =16099a(10) =68800a(11) =298743a(12) =1314381a(13) =5847047a(14) =26259408a(15) =118899489a(16) =542185061a(17) =2487712901a(18) =11476655590a(19) =53200947263a(20) =247676625637
External references
- oeis: A148416