# A344068 (b-file synthesized from sequence entry) 0 1 1 1 2 9 3 90 4 810 5 8019 6 72900 7 715149 8 6495390 9 63772920 10 579270690 11 5643903420 12 51613018479 13 499772430810 14 4567687565310 15 44250780833091 16 404188047763920 17 3894703308072990 18 35764052204589030 19 342923118899865390 20 3146016498406236720 21 30187757787717436380 22 276843069234653897241