36854

Appears in sequences

• Place a(n) red and b(n) blue balls in an urn; draw 6 balls without replacement; Probability(6 red balls)=Probability(4 red and 2 blue balls); binomial(a(n),6)=binomial(a(n),4)*binomial(b(n),2).at n=10A179123
• Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+4x+4y>0.at n=21A211626
• a(n) = Sum_{k=1..n} k! * k^(n-2) * |Stirling1(n,k)|.at n=5A373875