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), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
A149483
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), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =13a(4) =58a(5) =231a(6) =1083a(7) =4719a(8) =22652a(9) =103146a(10) =501823a(11) =2346298a(12) =11508135a(13) =54722503a(14) =269804391a(15) =1297724477a(16) =6420746958a(17) =31134239547a(18) =154419290003a(19) =753235565962
External references
- oeis: A149483