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), (0, 1, 1), (1, -1, 1), (1, 1, 0)}.
A150582
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), (0, 1, 1), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =110a(5) =462a(6) =2032a(7) =9032a(8) =40840a(9) =186321a(10) =858818a(11) =3984862a(12) =18611847a(13) =87360315a(14) =411863886a(15) =1949125972a(16) =9255386301a(17) =44077033173a(18) =210463673995
External references
- oeis: A150582