Number of permutations of [n] having no substring [k,k+1,k+2,k+3,k+4].
A370383
Number of permutations of [n] having no substring [k,k+1,k+2,k+3,k+4].
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =119a(6) =717a(7) =5026a(8) =40242a(9) =362376a(10) =3625081a(11) =39885851a(12) =478714416a(13) =6224078292a(14) =87145277160
External references
- oeis: A370383