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, 1), (0, 0, 1), (1, 1, -1)}.
A148314
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, 1), (0, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =38a(6) =118a(7) =353a(8) =1142a(9) =3628a(10) =12070a(11) =39764a(12) =135114a(13) =456160a(14) =1574734a(15) =5412457a(16) =18912486a(17) =65896108a(18) =232472470a(19) =818693712a(20) =2910776906a(21) =10338854570a(22) =36996327526a(23) =132328613972a(24) =476099847330
External references
- oeis: A148314