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, 1), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
A150441
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, 1), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =101a(5) =403a(6) =1799a(7) =7729a(8) =35582a(9) =159249a(10) =746868a(11) =3429129a(12) =16279415a(13) =76038150a(14) =364074308a(15) =1721288236a(16) =8293384763a(17) =39561489590a(18) =191523249524a(19) =919823257090
External references
- oeis: A150441