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, -1, 1), (1, 1, 0), (1, 1, 1)}.
A150933
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, -1, 1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =33a(4) =153a(5) =656a(6) =3085a(7) =13956a(8) =66521a(9) =308589a(10) =1484578a(11) =6994672a(12) =33852585a(13) =161210627a(14) =783499644a(15) =3759872734a(16) =18331111253a(17) =88471786249a(18) =432412838581
External references
- oeis: A150933