A276892 Number of ordered set partitions of [2n] where k=n is minimal such that for each block b the smallest integer interval containing b has at most k elements.

1, 2, 20, 878, 79682, 12043772, 2716968332, 853336081124, 355520118746132, 189580735777428836, 125874638274228457172, 101804159684084842005380, 98514573603328714169588852, 112376135259125932230989633060, 149216698787792363945310009639572

Offset

0,2

Links

Table of n, a(n) for n=0..14.

Formula

a(n) = A276891(2n,n).

Crossrefs

Cf. A276728, A276891.

Sequence in context: A163594 A193483 A013148 * A006547 A290883 A135757

Adjacent sequences: A276889 A276890 A276891 * A276893 A276894 A276895

Keyword

nonn

Author

Alois P. Heinz, Sep 21 2016

Status

approved