# A107486 (b-file synthesized from sequence entry) 1 1 2 5 3 10 4 20 5 35 6 60 7 60 8 110 9 70 10 220 11 140 12 280 13 210 14 385 15 660 16 630 17 420 18 840 19 1430 20 910 21 770 22 3360 23 2100 24 2380 25 1820 26 1540 27 5040 28 3465 29 3850 30 3080 31 2730 32 2310 33 6545 34 5005 35 10780 36 11220 37 9660 38 7140 39 5460 40 6930