4869057domain: NAppears in sequences(Terms in A014450)/2.at n=24A051474(Terms in A014450)/2.at n=26A051474(Terms in A014472)/2.at n=9A051475Symmetrical triangle T(n, m) = floor(Eulerian(n+1, m)/2), read by rows.at n=39A174098Symmetrical triangle T(n, m) = floor(Eulerian(n+1, m)/2), read by rows.at n=41A174098