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), (1, -1, -1), (1, -1, 1), (1, 1, 0)}.
A149145
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), (1, -1, -1), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =9a(4) =36a(5) =116a(6) =452a(7) =1613a(8) =6390a(9) =24192a(10) =98022a(11) =383304a(12) =1568862a(13) =6271646a(14) =25946098a(15) =105492537a(16) =439845324a(17) =1809101840a(18) =7589944482a(19) =31515272858a(20) =132927819060a(21) =556072151042
External references
- oeis: A149145