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, 0), (0, 1, -1), (1, 0, 0)}.
A148057
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, 0), (0, 1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =10a(5) =22a(6) =65a(7) =166a(8) =562a(9) =1648a(10) =5199a(11) =16864a(12) =57266a(13) =191065a(14) =643174a(15) =2276667a(16) =8015333a(17) =28228639a(18) =101105139a(19) =370143123a(20) =1348702341a(21) =4928075168a(22) =18351289405a(23) =68700034715a(24) =256666572281a(25) =966636795221
External references
- oeis: A148057