Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 0), (0, -1), (0, 1), (1, 0), (1, 1)}.
A151323
Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 0), (0, -1), (0, 1), (1, 0), (1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =14a(3) =67a(4) =342a(5) =1790a(6) =9580a(7) =52035a(8) =285990a(9) =1586298a(10) =8864676a(11) =49844238a(12) =281719164a(13) =1599314652a(14) =9113895960a(15) =52109150691a(16) =298806189318
External references
- oeis: A151323