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), (-1, 1, 0), (0, 1, 1), (1, -1, 0), (1, 1, -1)}.
A149066
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), (-1, 1, 0), (0, 1, 1), (1, -1, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =11a(4) =41a(5) =165a(6) =693a(7) =2975a(8) =13102a(9) =58543a(10) =265533a(11) =1216437a(12) =5625630a(13) =26208715a(14) =122883878a(15) =579308565a(16) =2743787003a(17) =13048731447a(18) =62277382336a(19) =298169598323
External references
- oeis: A149066