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), (-1, 0, 0), (-1, 1, 0), (0, 1, 1), (1, -1, -1)}.
A148311
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), (-1, 0, 0), (-1, 1, 0), (0, 1, 1), (1, -1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =37a(6) =116a(7) =360a(8) =1153a(9) =3817a(10) =13048a(11) =44328a(12) =156764a(13) =556684a(14) =1991467a(15) =7267248a(16) =26700444a(17) =98373586a(18) =368344033a(19) =1382631904a(20) =5215968755a(21) =19874247444a(22) =75909357904a(23) =291321256135
External references
- oeis: A148311