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, 0, 0), (1, 1, 0), (1, 1, 1)}.
A151210
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, 0, 0), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =53a(4) =249a(5) =1114a(6) =5374a(7) =25006a(8) =122170a(9) =580646a(10) =2856900a(11) =13755459a(12) =67974232a(13) =330102232a(14) =1635929596a(15) =7992375813a(16) =39687844586a(17) =194746571299a(18) =968445955527
External references
- oeis: A151210