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, 1, 1), (0, -1, 0), (1, 1, -1), (1, 1, 0)}.
A149354
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, 1, 1), (0, -1, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =12a(4) =42a(5) =158a(6) =619a(7) =2456a(8) =10094a(9) =42190a(10) =178778a(11) =767298a(12) =3334324a(13) =14614763a(14) =64576389a(15) =287507718a(16) =1288326564a(17) =5805041546a(18) =26294197307a(19) =119665532949a(20) =546883448861
External references
- oeis: A149354