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, 0), (0, 1, -1), (0, 1, 1), (1, 1, 0)}.
A150763
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, 0), (0, 1, -1), (0, 1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =30a(4) =124a(5) =526a(6) =2293a(7) =10151a(8) =45611a(9) =207164a(10) =948963a(11) =4379129a(12) =20334454a(13) =94910832a(14) =445014609a(15) =2094881198a(16) =9896041051a(17) =46892548781a(18) =222820230769
External references
- oeis: A150763