# A094067 (b-file synthesized from sequence entry) 1 1 2 0 3 2 4 0 5 3 6 3 7 0 8 12 9 7 10 5 11 0 12 60 13 35 14 17 15 8 16 0 17 360 18 210 19 102 20 35 21 13 22 0 23 2520 24 1470 25 714 26 245 27 70 28 21 29 0 30 20160 31 11760 32 5712 33 1960 34 560 35 134 36 34 37 0 38 181440 39 105840 40 51408 41 17640 42 5040 43 1206 44 251 45 55 46 0 47 1814400 48 1058400 49 514080 50 176400 51 50400 52 12060