# A143268 (b-file synthesized from sequence entry) 1 1 2 3 3 12 4 20 5 60 6 42 7 168 8 144 9 270 10 220 11 660 12 312 13 1092 14 630 15 960 16 1088 17 2448 18 1026 19 3420 20 1680 21 2772 22 2530 23 6072 24 2400 25 6500 26 4212 27 6804 28 4872 29 12180 30 3720 31 14880 32 8448 33 11220 34 9520 35 15120 36 7992 37 25308 38 13338 39 18720 40 13120 41 34440 42 10836 43 39732