Number of permutations of [n] with exactly one occurrence of the consecutive step pattern given by the binary expansion of n, where 1=up and 0=down.

A246221

Number of permutations of [n] with exactly one occurrence of the consecutive step pattern given by the binary expansion of n, where 1=up and 0=down.

Terms

    a(0) =1a(1) =3a(2) =50a(3) =270a(4) =602a(5) =5376a(6) =139714a(7) =1366016a(8) =15302031a(9) =161855232a(10) =2600075865a(11) =24776769024a(12) =83295229293

External references