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, 1, 1), (1, -1, 1), (1, 1, 0), (1, 1, 1)}.
A150936
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, 1, 1), (1, -1, 1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =33a(4) =161a(5) =680a(6) =3369a(7) =15088a(8) =75081a(9) =347064a(10) =1730781a(11) =8158649a(12) =40732877a(13) =194526790a(14) =971772573a(15) =4683554583a(16) =23404834485a(17) =113561913832a(18) =567609536625
External references
- oeis: A150936