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A259700 a(n) = Sum_{k=2..n-1} k*A259698(n,k) 2
1, 3, 8, 25, 72, 229, 689, 2224, 6875, 22457, 70767 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

COMMENTS

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

LINKS

Table of n, a(n) for n=2..12.

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

CROSSREFS

Cf. A259698, A000682.

Sequence in context: A141799 A093969 A259699 * A213439 A006177 A148788

Adjacent sequences:  A259697 A259698 A259699 * A259701 A259702 A259703

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jul 05 2015

EXTENSIONS

Corrected and extended by Roger Ford, Jul 13, 2016.

STATUS

approved

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Last modified October 23 07:05 EDT 2019. Contains 328335 sequences. (Running on oeis4.)