A259700 a(n) = Sum_{k=2..n-1} k*A259698(n,k).

1, 3, 8, 25, 72, 229, 689, 2224, 6875, 22457, 70767

Offset: 2

Author

N. J. A. Sloane, Jul 05 2015

Keywords

• nonn
• more

Comments

Sade gives a(5)=25, but that is wrong.

Links

• Albert Sade, Sur les Chevauchements des Permutations, published by the author, Marseille, 1949. [Annotated scanned copy]. See Section 14.

Crossrefs

Cf. A259698, A000682.

Extensions

Corrected and extended by Roger Ford, Jul 13 2016