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%I #28 Apr 28 2023 17:04:45
%S 1,11,158,3823,150309,9260886,868807341,121329481093,24768540218324,
%T 7282559551588341,3046214096033592769,1793950037677437221180,
%U 1474265690307795355749075,1677763495455703210030729685,2626545934585707736394538773674,5623547642339635201400382321016283
%N First differences of A006905.
%C Number of transitive relations involving a particular element of an n-set.
%H Firdous Ahmad Mala, <a href="https://doi.org/10.26855/jamc.2023.03.011">Some New Integer Sequences of Transitive Relations</a>, J. Appl. Math. Comp. (2023) Vol. 7, No. 1, 108-111.
%F a(n) = A006905(n) - A006905(n-1).
%e a(3) = A006905(3) - A006905(2) = 171 - 13 = 158.
%Y Cf. A006905.
%K nonn
%O 1,2
%A _Firdous Ahmad Mala_, Oct 03 2021
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