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), (-1, 0, 1), (-1, 1, -1), (1, 0, 0)}.
A148013
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), (-1, 0, 1), (-1, 1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =8a(5) =15a(6) =49a(7) =105a(8) =370a(9) =849a(10) =3095a(11) =7414a(12) =28588a(13) =71396a(14) =281514a(15) =721183a(16) =2905532a(17) =7606055a(18) =31290641a(19) =83451040a(20) =347766974a(21) =940689178a(22) =3969426742a(23) =10871603407a(24) =46382673907a(25) =128408010535a(26) =552374664184
External references
- oeis: A148013