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, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150537
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, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =102a(5) =429a(6) =1830a(7) =8036a(8) =35925a(9) =162302a(10) =743408a(11) =3430182a(12) =15952398a(13) =74673066a(14) =351264524a(15) =1660622930a(16) =7880737509a(17) =37532986236a(18) =179320488307a(19) =859048118661
External references
- oeis: A150537