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, 0), (-1, 1, -1), (-1, 1, 1), (0, 1, 1), (1, -1, 0)}.
A148372
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, 0), (-1, 1, -1), (-1, 1, 1), (0, 1, 1), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =16a(5) =42a(6) =147a(7) =456a(8) =1632a(9) =5436a(10) =20292a(11) =70488a(12) =269689a(13) =968663a(14) =3772561a(15) =13913269a(16) =54903537a(17) =206569753a(18) =824553180a(19) =3152717500a(20) =12698822581a(21) =49201218499a(22) =199719855616a(23) =782513292747
External references
- oeis: A148372