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, 0, 0), (-1, 1, 1), (0, 0, 1), (1, 0, -1)}.
A148294
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, 0, 0), (-1, 1, 1), (0, 0, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =13a(5) =35a(6) =110a(7) =332a(8) =1074a(9) =3607a(10) =12120a(11) =41835a(12) =148879a(13) =525959a(14) =1904427a(15) =6995590a(16) =25659595a(17) =95591032a(18) =360036559a(19) =1353702230a(20) =5153002842a(21) =19759502031a(22) =75714017272a(23) =292822792645
External references
- oeis: A148294