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, -1, 1), (-1, 0, -1), (1, 0, 0), (1, 1, 1)}.
A150381
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, -1, 1), (-1, 0, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =97a(5) =362a(6) =1577a(7) =6240a(8) =28009a(9) =114940a(10) =522955a(11) =2196683a(12) =10100781a(13) =43162414a(14) =199901541a(15) =865225257a(16) =4029080767a(17) =17615868458a(18) =82383872857a(19) =363146829627
External references
- oeis: A150381