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), (0, 1, 1), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.
A151234
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), (0, 1, 1), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =59a(4) =283a(5) =1359a(6) =6675a(7) =32727a(8) =162095a(9) =802141a(10) =3988263a(11) =19825449a(12) =98780051a(13) =492183055a(14) =2455358493a(15) =12250068089a(16) =61159025611a(17) =305364267749
External references
- oeis: A151234