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, 1, -1), (1, 1, 0)}.
A148718
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, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =7a(4) =24a(5) =71a(6) =268a(7) =885a(8) =3523a(9) =12512a(10) =51247a(11) =191513a(12) =800986a(13) =3101457a(14) =13187522a(15) =52445940a(16) =225832816a(17) =917309222a(18) =3989905040a(19) =16483552983a(20) =72298838407a(21) =302864656959
External references
- oeis: A148718