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, 1), (0, 0, 1), (1, -1, 1), (1, 0, 0), (1, 1, -1)}.
A150214
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, 1), (0, 0, 1), (1, -1, 1), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =21a(4) =81a(5) =333a(6) =1424a(7) =6263a(8) =28112a(9) =128166a(10) =591441a(11) =2755709a(12) =12939977a(13) =61151408a(14) =290525984a(15) =1386448835a(16) =6641603064a(17) =31919705258a(18) =153840916734a(19) =743285720192
External references
- oeis: A150214