Total number of nodes summed over all lattice paths from (0,0) to (n,n) that consist of steps (h,v) with h, v prime or one.
A308241
Total number of nodes summed over all 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) =2a(2) =5a(3) =18a(4) =68a(5) =244a(6) =880a(7) =3228a(8) =11905a(9) =43966a(10) =162498a(11) =600984a(12) =2222776a(13) =8218022a(14) =30368708a(15) =112162230a(16) =414006377a(17) =1527214022a(18) =5630258676a(19) =20744334800a(20) =76387507859a(21) =281129870088
External references
- oeis: A308241