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, 0), (-1, 0, 1), (1, -1, 0), (1, 0, -1), (1, 1, 1)}.
A149794
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, 0), (-1, 0, 1), (1, -1, 0), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =19a(4) =85a(5) =343a(6) =1603a(7) =6963a(8) =33103a(9) =149467a(10) =717119a(11) =3310881a(12) =15990331a(13) =74956235a(14) =363784547a(15) =1724083341a(16) =8397896787a(17) =40123660477a(18) =195991475917a(19) =942221083739
External references
- oeis: A149794