Number of length-7 0..n arrays with no adjacent pair x,x+1 followed at any distance by x+1,x.
A268461
Number of length-7 0..n arrays with no adjacent pair x,x+1 followed at any distance by x+1,x.
Terms
- a(0) =29a(1) =1169a(2) =11536a(3) =62535a(4) =240170a(5) =736525a(6) =1926444a(7) =4474451a(8) =9476950a(9) =18644745a(10) =34530920a(11) =60809119a(12) =102607266a(13) =166901765a(14) =262977220a(15) =402956715a(16) =602407694a(17) =881028481a(18) =1263420480a(19) =1779951095a(20) =2467712410a(21) =3371580669a(22) =4545381596
External references
- oeis: A268461