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, 0, 1), (0, 0, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
A151240
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, 0, 1), (0, 0, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =14a(3) =64a(4) =312a(5) =1509a(6) =7453a(7) =36705a(8) =182306a(9) =904450a(10) =4504678a(11) =22425745a(12) =111860659a(13) =557873292a(14) =2785109263a(15) =13903649793a(16) =69448593079a(17) =346895872507
External references
- oeis: A151240