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, 0, -1), (-1, 1, 1), (1, -1, 0), (1, 1, 0)}.
A149163
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, 0, -1), (-1, 1, 1), (1, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =9a(4) =40a(5) =119a(6) =539a(7) =1841a(8) =8364a(9) =30955a(10) =141649a(11) =549875a(12) =2542866a(13) =10164631a(14) =47527100a(15) =193802541a(16) =914717352a(17) =3788393117a(18) =18005282017a(19) =75561381227a(20) =360910284426
External references
- oeis: A149163