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), (-1, 1, 1), (1, 0, -1), (1, 0, 1)}.
A149304
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), (-1, 1, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =48a(5) =153a(6) =695a(7) =2461a(8) =11430a(9) =42933a(10) =202241a(11) =790669a(12) =3760536a(13) =15125411a(14) =72443050a(15) =297652719a(16) =1433159704a(17) =5986967421a(18) =28945946323a(19) =122535705935a(20) =594410042334
External references
- oeis: A149304