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, 0, -1), (-1, 1, 1), (1, 0, 0), (1, 0, 1)}.
A150315
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, 0, -1), (-1, 1, 1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =21a(4) =88a(5) =307a(6) =1373a(7) =5156a(8) =23729a(9) =93107a(10) =435598a(11) =1760115a(12) =8329158a(13) =34383457a(14) =164058562a(15) =688393961a(16) =3304773978a(17) =14046675493a(18) =67750533729a(19) =290991214630
External references
- oeis: A150315