Number of lattice paths from (0,0) to (n,n) using steps (1,1), (0,2), (2,0), (0,3), (3,0).
A192371
Number of lattice paths from (0,0) to (n,n) using steps (1,1), (0,2), (2,0), (0,3), (3,0).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =9a(4) =25a(5) =87a(6) =307a(7) =1113a(8) =4149a(9) =15605a(10) =59201a(11) =225999a(12) =866449a(13) =3333847a(14) =12865335a(15) =49769689a(16) =192945411a(17) =749396493a(18) =2915432049a(19) =11358771965a(20) =44313108627a(21) =173081422997a(22) =676766482917
External references
- oeis: A192371