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, 1), (0, 1, -1), (0, 1, 0), (1, 0, 1)}.
A150286
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, 1), (0, 1, -1), (0, 1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =92a(5) =373a(6) =1570a(7) =6753a(8) =29355a(9) =129108a(10) =573051a(11) =2558595a(12) =11492389a(13) =51893937a(14) =235229752a(15) =1070025103a(16) =4883515868a(17) =22349033969a(18) =102528034549a(19) =471427909042
External references
- oeis: A150286