# A123244 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 3 4 3 5 1 6 15 7 15 8 9 9 4 10 105 11 105 12 90 13 55 14 9 15 945 16 945 17 1050 18 735 19 225 20 64 21 10395 22 10395 23 14175 24 10710 25 4725 26 2079 27 225 28 135135 29 135135 30 218295 31 173250 32 99225 33 53487 34 11025 35 2304 36 2027025 37 2027025 38 3783780 39 3108105 40 2182950 41 1327095