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, 1, -1), (0, 1, 0), (0, 1, 1), (1, 0, 0)}.
A151073
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, 1, -1), (0, 1, 0), (0, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =39a(4) =163a(5) =698a(6) =3093a(7) =13980a(8) =63817a(9) =295250a(10) =1378577a(11) =6473083a(12) =30601533a(13) =145413606a(14) =693468104a(15) =3320340108a(16) =15949166440a(17) =76800820187a(18) =370781922113
External references
- oeis: A151073