# A242512 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 9 4 32 5 85 6 240 7 588 8 1512 9 3564 10 8700 11 19965 12 47124 13 105963 14 244244 15 540540 16 1224080 17 2674984 18 5974956 19 12924522 20 28553200 21 61250490 22 134104432 23 285689624 24 620826672 25 1314933000 26 2839363800 27 5984393805 28 12852021420 29 26973910215 30 57655813500 31 120569654700 32 256649540640 33 535009931280 34 1134692142540 35 2358818719950 36 4986548028000 37 10340761857030 38 21796919253120 39 45102668144040 40 94821703158000