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), (0, 1, 1), (1, 0, -1), (1, 0, 1)}.
A150443
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), (0, 1, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =102a(5) =408a(6) =1780a(7) =7757a(8) =34690a(9) =156181a(10) =714290a(11) =3284745a(12) =15233382a(13) =71023292a(14) =333095347a(15) =1568553797a(16) =7414909448a(17) =35181429040a(18) =167431337614a(19) =798833158181
External references
- oeis: A150443