Number of lattice paths from (0,0) to (n,n) that consist of steps (h,v) with h, v prime or one.
A308240
Number of lattice paths from (0,0) to (n,n) that consist of steps (h,v) with h, v prime or one.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =19a(5) =58a(6) =184a(7) =604a(8) =2017a(9) =6806a(10) =23161a(11) =79392a(12) =273614a(13) =946981a(14) =3289364a(15) =11460830a(16) =40036253a(17) =140175224a(18) =491756763a(19) =1728190792a(20) =6082921479a(21) =21440851774a(22) =75669652513a(23) =267362335333a(24) =945656056754
External references
- oeis: A308240