Number of signed permutations of length n where numbers occur in consecutive order.

A319536

Number of signed permutations of length n where numbers occur in consecutive order.

Terms

    a(0) =0a(1) =2a(2) =14a(3) =122a(4) =1278a(5) =15802a(6) =225886a(7) =3670074a(8) =66843902a(9) =1349399162a(10) =29912161758a(11) =722399486074

External references