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, 1, 1), (1, 0, -1), (1, 0, 0)}.
A150282
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, 1, 1), (1, 0, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =90a(5) =375a(6) =1613a(7) =7059a(8) =31605a(9) =142999a(10) =654438a(11) =3022635a(12) =14049537a(13) =65740592a(14) =309093625a(15) =1459725894a(16) =6920762955a(17) =32917564379a(18) =157043754152a(19) =751157909715
External references
- oeis: A150282