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, 1, 0), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
A149754
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, 1, 0), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =17a(4) =83a(5) =333a(6) =1643a(7) =7155a(8) =35489a(9) =161173a(10) =801969a(11) =3736501a(12) =18625587a(13) =88230789a(14) =440281431a(15) =2109661555a(16) =10534432565a(17) =50894814307a(18) =254247117363
External references
- oeis: A149754