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, 0, 1), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
A150585
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, 0, 1), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =110a(5) =471a(6) =2119a(7) =9586a(8) =44409a(9) =206599a(10) =973748a(11) =4604843a(12) =21946347a(13) =104877487a(14) =503695712a(15) =2424445881a(16) =11709284723a(17) =56654824221a(18) =274788262853
External references
- oeis: A150585