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, -1, 1), (-1, 1, 0), (0, 0, -1), (1, 0, 0)}.
A148056
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, -1, 1), (-1, 1, 0), (0, 0, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =10a(5) =22a(6) =65a(7) =152a(8) =509a(9) =1466a(10) =4645a(11) =13532a(12) =44434a(13) =146454a(14) =483958a(15) =1573257a(16) =5245446a(17) =18189431a(18) =62918036a(19) =215842095a(20) =743114400a(21) =2625979396a(22) =9395162641a(23) =33370716692a(24) =118291958507a(25) =424227452507
External references
- oeis: A148056