23847domain: NAppears in sequencesa(n) = floor(n*exp(n)).at n=8A058738Number of nodes in row n of the power tree A114622.at n=19A114623Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 3X3 el 1,1 1,2 1,3 2,3 3,3 in any orientation.at n=10A146031