Number of consistent sets of 3 irreflexive binary order relationships over n objects.

Terms

a(0) =6a(1) =152a(2) =940a(3) =3600a(4) =10570a(5) =26096a(6) =56952a(7) =113280a(8) =209550a(9) =365640a(10) =608036a(11) =971152a(12) =1498770a(13) =2245600a(14) =3278960a(15) =4680576a(16) =6548502a(17) =8999160a(18) =12169500a(19) =16219280a(20) =21333466a(21) =27724752a(22) =35636200a(23) =45344000a(24) =57160350a(25) =71436456a(26) =88565652a(27) =108986640a(28) =133186850a(29) =161705920