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A348151 First differences of A006905. 0
1, 11, 158, 3823, 150309, 9260886, 868807341, 121329481093, 24768540218324, 7282559551588341, 3046214096033592769, 1793950037677437221180, 1474265690307795355749075, 1677763495455703210030729685, 2626545934585707736394538773674, 5623547642339635201400382321016283 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Number of transitive relations involving a particular element of an n-set.

LINKS

Table of n, a(n) for n=1..16.

FORMULA

a(n) = A006905(n) - A006905(n-1).

EXAMPLE

a(3) = A006905(3) - A006905(2) = 171 - 13 = 158.

CROSSREFS

Cf. A006905.

Sequence in context: A156933 A242008 A158512 * A324430 A326097 A135700

Adjacent sequences:  A348148 A348149 A348150 * A348152 A348153 A348154

KEYWORD

nonn

AUTHOR

Firdous Ahmad Mala, Oct 03 2021

STATUS

approved

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Last modified May 20 01:04 EDT 2022. Contains 353847 sequences. (Running on oeis4.)