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, 0), (1, -1, 0), (1, 0, 0)}.
A148576
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, 0), (1, -1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =6a(4) =20a(5) =50a(6) =185a(7) =518a(8) =2030a(9) =6148a(10) =24846a(11) =79517a(12) =328434a(13) =1093141a(14) =4596452a(15) =15762558a(16) =67208043a(17) =236101363a(18) =1017431745a(19) =3645586226a(20) =15845246901a(21) =57710489171a(22) =252664692401a(23) =932991093721
External references
- oeis: A148576