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), (0, 0, -1), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.
A150095
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), (0, 0, -1), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =19a(4) =67a(5) =245a(6) =943a(7) =3733a(8) =15148a(9) =62659a(10) =263762a(11) =1125051a(12) =4855238a(13) =21168921a(14) =93117909a(15) =412745112a(16) =1842140307a(17) =8272446946a(18) =37352723250a(19) =169495410984a(20) =772594233104
External references
- oeis: A150095