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, -1, 1), (0, 1, -1), (1, 1, 0), (1, 1, 1)}.
A151010
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, -1, 1), (0, 1, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =39a(4) =178a(5) =840a(6) =4007a(7) =19340a(8) =94128a(9) =460168a(10) =2259995a(11) =11132979a(12) =54970170a(13) =271972002a(14) =1347631186a(15) =6685969540a(16) =33205872514a(17) =165056176495a(18) =821039167010
External references
- oeis: A151010