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, 0), (-1, 0, 1), (0, 0, -1), (1, 0, 0), (1, 1, 0)}.
A150344
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, 0), (-1, 0, 1), (0, 0, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =90a(5) =348a(6) =1438a(7) =5988a(8) =25675a(9) =111243a(10) =489876a(11) =2175733a(12) =9766827a(13) =44140869a(14) =200971543a(15) =920150026a(16) =4235445389a(17) =19585913405a(18) =90945823122a(19) =423880466756
External references
- oeis: A150344