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, 1), (1, -1, 0), (1, 1, 0)}.
A149130
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, 1), (1, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =9a(4) =34a(5) =105a(6) =401a(7) =1367a(8) =5476a(9) =19349a(10) =80273a(11) =292215a(12) =1232272a(13) =4620353a(14) =19623528a(15) =75369853a(16) =321847302a(17) =1257747177a(18) =5400963549a(19) =21375561605a(20) =92259387954a(21) =368913498877
External references
- oeis: A149130