87358domain: NAppears in sequencesGeneralized tangent numbers d_(n,2).at n=25A000176Number of ordered triples (w,x,y) with all terms in {-n,...,-1,1,...,n} and w+3x+3y>0.at n=28A211625Number of (n+5)X12 0..1 matrices with each 6X6 subblock idempotent.at n=16A224576