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, 0), (-1, 1, 1), (1, -1, 0), (1, 1, 0)}.
A149292
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, 0), (-1, 1, 1), (1, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =46a(5) =145a(6) =641a(7) =2287a(8) =10362a(9) =38721a(10) =178975a(11) =700051a(12) =3274170a(13) =13103091a(14) =61899718a(15) =253721395a(16) =1206633562a(17) =5014531143a(18) =23988956031a(19) =101185506495a(20) =486117617820
External references
- oeis: A149292