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, 1), (0, 1, 1), (1, 0, 1), (1, 1, 0)}.
A151152
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, 1), (0, 1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =47a(4) =207a(5) =932a(6) =4282a(7) =19921a(8) =93514a(9) =442688a(10) =2106609a(11) =10071788a(12) =48346849a(13) =232814651a(14) =1124326965a(15) =5442695967a(16) =26401152237a(17) =128300556743a(18) =624502941066
External references
- oeis: A151152