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), (0, 0, 1), (0, 1, 1), (1, 0, 0)}.
A151043
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), (0, 0, 1), (0, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =33a(4) =129a(5) =516a(6) =2150a(7) =9087a(8) =38998a(9) =169860a(10) =745294a(11) =3299632a(12) =14710027a(13) =65916647a(14) =296959414a(15) =1343326744a(16) =6099110908a(17) =27786718053a(18) =126954339999a(19) =581583216022
External references
- oeis: A151043