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, 0), (0, 0, -1), (1, 0, 0), (1, 1, 0)}.
A150322
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, 0), (0, 0, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =22a(4) =85a(5) =314a(6) =1277a(7) =5137a(8) =21608a(9) =91278a(10) =393985a(11) =1714919a(12) =7555790a(13) =33553007a(14) =150242961a(15) =677010989a(16) =3070101991a(17) =13992710552a(18) =64093411496a(19) =294810790148
External references
- oeis: A150322