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, 1, 0), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.
A150332
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, 1, 0), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =22a(4) =89a(5) =332a(6) =1439a(7) =5844a(8) =26294a(9) =112273a(10) =516921a(11) =2280559a(12) =10663316a(13) =48126719a(14) =227497714a(15) =1043939945a(16) =4974692955a(17) =23116095160a(18) =110835759296a(19) =520079767164
External references
- oeis: A150332