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, -1, 0), (-1, 0, 0), (0, 0, 1), (1, 1, -1)}.
A148306
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, -1, 0), (-1, 0, 0), (0, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =37a(6) =111a(7) =355a(8) =1096a(9) =3525a(10) =11943a(11) =39891a(12) =134484a(13) =470275a(14) =1643778a(15) =5737623a(16) =20495834a(17) =73696547a(18) =264092609a(19) =959062035a(20) =3514045706a(21) =12847510961a(22) =47299867210a(23) =175651129687a(24) =652115852068
External references
- oeis: A148306