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, 0), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
A151077
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, 0), (0, 1, 1), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =40a(4) =172a(5) =761a(6) =3484a(7) =16219a(8) =76413a(9) =364192a(10) =1748227a(11) =8443769a(12) =40994937a(13) =199796255a(14) =977047346a(15) =4791306327a(16) =23549578328a(17) =115979651288a(18) =572148949214
External references
- oeis: A151077